E fx-5800P User's Guide http://world.casio.
k Remove the insulation sheet! Your calculator comes with a special insulation sheet, which isolates the battery from the contacts in the battery compartment, to keep the battery from running down during storage and shipment. Be sure to remove the insulation sheet before trying to use the calculator for the first time. To remove the insulation sheet 1. Pull the tab of the insulation sheet in the direction indicated by the arrow to remove it. Pull to remove 引き抜いてください 2.
k About this Manual • Most of the keys perform multiple functions. Pressing 1 or S and then another key will perform the alternate function of the other key. Alternate functions are marked above the keycap. Alternate function sin–1{D} Keycap function s Alternate function operations are notated in this manual as shown below. –1 Example: 1s(sin )1E The notation in parentheses indicates the function executed by the preceding key operation.
• A mark like the ones shown below indicates that you need to change the calculator’s angle unit setting. If you see this: v Change the angle unit setting to: If you see this: V Deg Change the angle unit setting to: Rad For details, see “Specifying the Angle Unit” (page 12). Safety Precautions Be sure to read the following safety precautions before using this calculator. Be sure to keep all user documentation handy for future reference.
Operating Precautions • Be sure to press the P button on the back of the calculator before using the calculator for the first time. See page 1 for information about the P button. • Even if the calculator is operating normally, replace the battery at least once a year. A dead battery can leak, causing damage to and malfunction of the calculator. Never leave a dead battery in the calculator. • The battery that comes with this unit discharges slightly during shipment and storage.
Contents Remove the insulation sheet! ............................................................................................. 1 Resetting the Calculator to Initial Defaults.......................................................................... 1 About this Manual............................................................................................................... 2 Symbols Used in Examples................................................................................................
Reserving Variable Memory ...................................................................35 User Memory Area ........................................................................................................... 35 Using Extra Variables ....................................................................................................... 36 Using π and Scientific Constants..........................................................37 Pi (π) ..........................................................
Viewing Equation Solutions .............................................................................................. 72 Statistical Calculations (SD/REG) .........................................................72 Statistical Sample Data .................................................................................................... 72 Performing Single-variable Statistical Calculations ..........................................................
Appendix ...............................................................................................128 Calculation Priority Sequence ........................................................................................ 128 Stack Limitations ............................................................................................................ 130 Calculation Ranges, Number of Digits, and Precision .................................................... 130 Error Messages ..........................
Before starting a calculation... k Turning On the Calculator Press o. This displays the same screen that was on the display when you last turned off the calculator. A Adjusting Display Contrast If the figures on the display become hard to read, try adjusting display contrast. 1. Press Nc3(SYSTEM)1(Contrast). • This displays the contrast adjustment screen. 2. Use d and e to adjust display contrast. 3. After the setting is the way you want, press J.
Input expression Calculation result A Display Symbols The symbols described below appear on the display of the calculator to indicate the current calculation mode, the calculator setup, the progress of calculations, and more. The nearby sample screen shows the 7 symbol. The 7 symbol turns on when degrees (Deg) are selected for the default angle unit (page 12). Calculation Modes and Setup k Selecting a Calculation Mode Your calculator has 11 “calculation modes”. A Selecting a Calculation Mode 1. Press N.
To select this calculation mode: Go to this screen: And press this key: 1(LINK) LINK (Communication) MEMORY (Memory Management) Screen 2 2(MEMORY) 3(SYSTEM) SYSTEM (Contrast Adjustment, Reset) • To exit the calculation mode menu without changing the calculation mode, press N. k Calculator Setup The calculator setup can be used to configure input and output settings, calculation parameters, and other settings. The setup can be configured using setup screens, which you access by pressing 1 N(SETUP).
A Specifying the Angle Unit To select this angle unit: Perform this key operation: Degrees 1N3(Deg) Radians 1N4(Rad) Grads 1N5(Gra) (90˚ = A Specifying the Display Digits To specify this display digit setting: π radians = 100 grads) 2 Perform this key operation: Number of Decimal Places 1N6(Fix)0(0) to 9(9) Significant Digits 1N7(Sci)1(1) to 9(9), 0(10) Exponential Display Range 1N8(Norm)1(Norm1) or 2(Norm2) The following explains how calculation results are displayed in accordance with the
A Specifying the Engineering Symbol Setting This setting lets you turn engineering symbols on and off. For more information, see “Using Engineering Symbols” on page 54. To do this: Perform this key operation: Turn engineering symbols on 1Nc3(ENG)1(EngOn) Turn engineering symbols off 1Nc3(ENG)2(EngOff) While engineering symbols are turned on (EngOn), engineering symbols are used when a calculation result is outside of the range of 1 < x < 1000.
Calculation Mode ..................................... COMP Setup Settings Display Format .................................... MthIO Angle Unit ............................................ Deg Exponential Display ............................. Norm1 Fraction Format .................................. d/c Complex Number Format .................... a+bi Engineering Symbol ............................ EngOff Statistical Frequency ........................... FreqOff BASE-N Negatives ..............................
A Inputting Scientific Functions with Parentheses (sin, cos, ', etc.) Your calculator supports input of the scientific functions with parentheses shown below. Note that after you input the argument, you need to press ) to close the parentheses.
A Number of Input Characters (Bytes) As you input a mathematical expression, it is stored in memory called an “input area,” which has a capacity of 127 bytes. This means you can input up to 127 bytes for a single mathematical expression. When linear display is selected as the display format, each function normally uses one or two bytes of memory. With the natural display format, each function use four or more bytes of memory.
Function Key Operation *1 *2 7 Yes Derivative z – {MATH}2(d/dX) Second Derivative z – {MATH}3(d /dX ) 7 Yes Σ Calculation z – {MATH}4(Σ() 11 Yes 2 2 Note If you include values or expressions in parentheses (( and )) while using natural display, the height of the parentheses will adjust automatically depending on whether they enclose one line or two lines. Regardless of their height, opening and closing parentheses take up one byte of memory each.
A Scrolling the Screen Left and Right The screen will show up to 14 characters when inputting with natural display. When you input more than 14 characters, the screen will scroll automatically. If this happens, the ] symbol will turn on to let you know that the expression runs off the left side of the display. B Input expression 1111 + 2222 + 3333 + 444 Displayed expression Cursor • While the ] symbol is turned on, you can use the d key to move the cursor to the left and scroll the screen.
k Editing a Calculation A Insert Mode and Overwrite Mode The calculator has two input modes. The insert mode inserts your input at the cursor location, shifting anything to the right of the cursor to make room. The overwrite mode replaces the key operation at the cursor location with your input. Only the insert mode is available when natural display is selected as the display format. You cannot change to the overwrite mode.
dd Y Overwrite Mode b 369**12 ddd Y A Editing a Key Operation within an Expression With the insert mode, use d and e to move the cursor to the right of the key operation you want to edit, press Y to delete it, and then perform the correct key operation. With the overwrite mode, move the cursor to the key operation you want to correct and then perform the correct key operation.
k Finding the Location of an Error If your calculation expression is incorrect, an error message will appear on the display when you press E to execute it. Pressing the J, d, or e key after an error message appears will cause the cursor to jump to the location in your calculation that caused the error so you can correct it. Example: When you input 14 ÷ 0 × 2 = instead of 14 ÷ 5 × 2 = (The following examples use the insert mode.
k Example Calculations Example: ' 2 +' 8 = 3' 2 B !2e+!8E Produce the result in decimal format: !2e+!81E Using the f Key (S-D Transformation) You can use the f key to transform a value between its decimal (D) form and its standard (S) form (fraction, ', π). Important! • Depending on the type of calculation result that is on the display when you press the f key, the conversion process may take some time to perform.
Note • Each press of the f key toggles the displayed result between the two forms. • The format of the fraction depends on which fraction display format (improper or mixed) is currently selected (page 12).
Example 1: 2.5 + 1 − 2 = 1.5 b 2.5+1-2E Example 2: 7 × 8 − 4 × 5 = 36 b 7*8-4*5E • The calculator determines the proper priority sequence for addition, subtraction, multiplication, and division automatically. See “Calculation Priority Sequence” on page 128 for more information. k Fractions Keep in mind when inputting fractions on your calculator that the input procedure you need to use depends on whether natural display or linear display is selected as the display format (page 11), as shown below.
A Fraction Calculation Examples Example 1: B 2 1 7 + = 3 2 6 '2c3 e+ '1c2 E b 2'3+1'2 E Example 2: 3 b 1 2 11 +1 =4 (Fraction Display Format: ab/c) 4 3 12 3'1'4+ 1'2'3E B 1'(()3e1c4e+ 1'(()1e2c3E E-25
Note • If the total number of elements (integer digits + numerator digits + denominator digits + separator symbols) that make up a mixed fraction expression is greater than 10, the calculation result will be displayed in decimal form. • If an input calculation includes a mixture of fraction and decimal values, the result will be displayed in decimal format. • You can input integers only for the elements of a fraction.
Example 1: 2% = 0.02 ( 2 ) 100 21,(%)E Example 2: 150 × 20% = 30 (150 × 20 ) 100 150*201,(%)E Example 3: What percent of 880 is 660? 660/880 1,(%)E Example 4: Increase 2500 by 15%. 2500+2500* 151,(%)E Example 5: Reduce 3500 by 25%. 3500-3500* 251,(%)E k Degree, Minute, Second (Sexagesimal) Calculations You can perform calculations using sexagesimal values, and you can convert between sexagesimal and decimal.
A Sexagesimal Calculation Examples • The following types of sexagesimal calculations will produce sexagesimal results. - Addition or subtraction of two sexagesimal values - Multiplication or division of a sexagesimal value and a decimal value Example 1: 2°20´30˝ + 39´30˝ = 3°00´00˝ b 2e20e30e+ 0e39e30eE Example 2: 2°20´00˝ × 3.5 = 8°10´00˝ b 2e20e* 3.
k Accessing Calculation History The ` symbol in the upper right corner of the display indicates that there is data stored in calculation history. To view the data in calculation history, press f. Each press of f will scroll upwards (back) one calculation, displaying both the calculation expression and its result.
d YYYY -7.1E Using Multi-statements in Calculations A multi-statement is a statement that is made up of multiple calculation expressions separated by special separator codes (: and ^). The following examples show how the two separator codes differ from each other. {expression 1} : {expression 2} : .... : {expression n} Pressing E executes each expression in sequence, starting with {expression 1} and ending with the final expression in the series.
E E Note • The Q symbol turns on in the upper right corner of the display when execution of a multi-statement calculation has been paused by a ^ separator. • When performing a multi-statement calculation, Ans (Answer Memory) (page 32) is updated each time any of the statements that makes up a multi-statement produces a result. • You can mix “^” and “:” separators within the same calculation.
k Using Answer Memory (Ans) The result of any new calculation you perform on the calculator is stored automatically in Answer Memory (Ans). A Automatic Insertion of Ans in Consecutive Calculations If you start a new calculation while the result of a previous calculation is still on the display, the calculator will insert Ans into the applicable location of the new calculation automatically. Example 1: To divide the result of 3 × 4 by 30 b 3*4E (Next) /30E Pressing / inputs Ans automatically.
A Inserting Ans into a Calculation Manually You can insert Ans into a calculation at the current cursor location by pressing 1-(Ans). Example 1: To use the result of 123 + 456 in another calculation as shown below 123 + 456 = 579 789 – 579 = 210 b 123+456E 789-1-(Ans)E 2 2 Example 2: To determine the square root of 3 + 4 and then add 5 to the result b 3x+4xE !1-(Ans))+5E k Using Independent Memory Independent memory (M) is used mainly for calculating cumulative totals.
Example: To subtract the result of 3 × 2 from independent memory (M) b 3*21l(M–) Note Pressing l or 1l(M–) while a calculation result is on the display will add it to or subtract it from independent memory. Important! The value that appears on the display when you press l or 1l(M–) at the end of a calculation in place of E is the result of the calculation (which is added to or subtracted from independent memory). It is not the current contents of independent memory.
A Using a Variable in a Calculation You can use variables in calculations the same way you use values. Example: To calculate 5 + A 5+S0(A)E A Clearing the Value Assigned to a Variable (to 0) Example: To clear variable A 01~(STO)0(A) A Clearing All Variables (to 0) Use the MEMORY Mode screen to clear the contents of all the variables. See “Memory Manager (MEMORY)” on page 126 for more information.
A Adding Extra Variables Example: To increase the number of variables by 10 b 10z – {PROG} – {/}1.(Dim Z)E • When “Done” appears on the display, it means that the number of extra variables you specified has been added. At this point, zero is assigned to all of the extra variables. (To check the value of Z[10]) oS5(Z) Si([)10S6(])E Note Reserving variable memory uses up a basic 26 bytes, plus 12 bytes for each of the extra variables that you add.
Important! You can write data to extra variables in the COMP Mode or in a COMP Mode program. A Recalling the Contents of an Extra Variable Input the name (Z[n]) of the extra variable whose contents you want to recall, and then press E. Example: To recall the contents of extra variable Z[5] b S5(Z)Si([)5a6(])E A Using an Extra Variable in a Calculation You can use extra variables in calculations the same way you use values.
k Scientific Constants Your calculator has 40 often-used scientific constants built in. Like π, each scientific constant has a unique display symbol. Scientific constants are supported in all modes, except for the BASE-N Mode. A Inputting a Scientific Constant 1. Press z to display the function menu. 2. On the menu, select “CONST”. • This displays page 1 of the scientific constant menu. • There are five scientific command menu screens, and you can use c and f to navigate between them.
z – {CONST}cccc1(ƫ0)) E A List of Scientific Constants The numbers in the “No.” column show the scientific constant menu page number on the left and the number key you need to press to select the constant when the proper menu page is displayed. No. 1-1 Scientific Constant No.
Scientific Function Calculations Unless otherwise noted, the functions in this section can be used in any of the calculator’s calculation modes, except for the BASE-N Mode. Scientific Function Calculation Precautions • When performing a calculation that includes a built-in scientific function, it may take some time before the calculation result appears. Do not perform any key operation on the calculator until the calculation result appears. • To interrupt an on-going calculation operation, press @.
k Angle Unit Conversion You can convert a value that was input using one angle unit to another angle unit. After you input a value, select z – {ANGLE} to display the menu screen shown below. 1(°): Degrees 2(r): Radians 3(g): Grads Example: To convert bv π radians to degrees 2 (15(π)/2) z – {ANGLE}2(r)E k Hyperbolic and Inverse Hyperbolic Functions –1 –1 –1 sinh(, cosh(, tanh(, sinh (, cosh (, tanh ( A Syntax and Input sinh({n}) (Other functions may be used in argument.) Example: sinh 1 = 1.
Example 1: log216 = 4, log16 = 1.204119983 b l2,16)E l16)E Base 10 (common logarithm) is assumed when no base is specified. B z – {MATH}c7(logab) 2e16E Example 2: ln 90 (= loge 90) = 4.49980967 b i90)E k Power Functions and Power Root Functions x2, x–1, ^(, '(, 3'(, x'( A Syntax and Input 2 2 {n} x ............................... {n} –1 –1 {n} x ............................. {n} { } {(m)}^({n}) ....................... {m} n '({n}) .......................... {n} 3 3 '({n}) .........................
(1+1)62+2)E B (!2e+1) (!2e-1)E (1+1)62+2E 2 Example 2: (–2) 3 = 1.587401052 b (-2)6(2'3)E k Integration Calculation Your calculator performs integration using Gauss-Kronrod integration for approximation. The calculator uses the following function for integration. ∫( A Syntax and Input ∫( f(x), a, b, tol) f(x): Function of x (Input the function used by variable X.) • All variables other than X are viewed as constants.
b z – {MATH}1(∫dX) iS0(X)),1,1i(%)1))E A Remarks • Use of ∫( is supported in the COMP, SD, REG, and EQN Modes only. • The following functions cannot be input for the f(x), a, b, and tol parameters: ∫(, d/dx(, d2/dx2(, Σ(. In addition, the Pol( and Rec( functions, and the random number functions cannot be input for the f(x) parameter. • The integration result will be negative when the limit of region of integration parameters are within the range a < x < b and f(x) < 0. 2 Example: ∫(0.5X – 2, –2, 2) = –5.
∫ b a f(x)dx = ∫ x1 a f(x)dx + ∫ x2 x1 f(x)dx + .....+ ∫ b x4 f(x)dx k Derivative Your calculator performs differential calculations by approximating the derivative based on centered difference approximation. Calculation is performed using the function shown below. d/dx( A Syntax and Input d/dx( f (x), a, tol) f(x): Function of x (Input the function used by variable X.) • All variables other than X are viewed as constants.
differential calculation result that approaches zero can cause poor precision or error. • You can interrupt an ongoing differential calculation operation by pressing o. k Second Derivative 2 2 Your calculator lets you calculate the second derivative coefficient (d /dx ( f (x))|x=a) for f (x) where x = a. Your calculator uses approximation based on the second order value differential equation of the Newton interpolation polynomial. Calculation is performed using the function shown below.
The following shows the calculation formula used for Σ calculations. Σ( f (x), x, a, b) = f (a) + f (a+1) + .... + f (b) A Syntax and Input Σ( f (x), x, a, b) f (x): Function of x (parameter variable specified below) x: Parameter variable (Any letter from A through Z) • If the variable name you specify here does not match the variable name used within the function of x, the variable in the function will be treated as a constant.
A Syntax and Input Rectangular-to-Polar Coordinate Conversion (Pol) Pol(x, y) x: Rectangular coordinate x-value y: Rectangular coordinate y-value Polar-to-Rectangular Coordinate Conversion (Rec) Rec(r, Ƨ) r : Polar coordinate r-value Ƨ: Polar coordinate Ƨ-value 2, ' 2 ) to polar coordinates Example 1: To convert the rectangular coordinates (' bv 1+(Pol)!2) ,!2))E Bv 1+(Pol)!2e ,!2e)E Example 2: To convert the polar coordinates (2, 30˚) to rectangular coordinates bv 1-(Rec)2, 30)E A Remarks • These func
k Random Number Functions Your calculator comes with functions for generating ten-digit non-sequential random numbers, ten-digit sequential random numbers, or random integers within a specific range. The following are the random number generation functions. Ran#, RanInt#( A Non-sequential Random Numbers (Decimal Values) The following generates ten-digit non-sequential fractional numbers in the range of 0 to 1.
z – {MATH}6(Ran#)1E E E A Random Integers This function generates random integers within a specific range. Syntax: RanInt#({m}, {n}) (m and n are integers. m < n; |m|, |n| < 1E10; n – m < 1E10) Example: To generate random integers in the range of 0 to 5 B z – {MATH}c8(RanInt)0,5)E E E The above values are provided for example only. The actual values produced by your calculator for this function will be different.
A Factorial (!) Syntax: {n}! ({n} must be a natural number or 0.
Display Digit Setting: Norm1 or Norm2 The mantissa is rounded off to 10 digits. Display Digit Setting: Fix or Sci The value is rounded to the specified number of digits. Example: 200 ÷ 7 × 14 = 400 b 200/7*14E (3 decimal places) 1N(SETUP)6(Fix)3E (Internal calculation uses 15 digits.) 200/7E *14E Now perform the same calculation using the rounding (Rnd) function. o200/7E (Calculation uses rounded value.
Syntax: Int({n}) Example: To extract the integer part of –1.5 b z – {MATH}c2(Int)-1.5)E A Fractional Part Extraction (Frac) The Frac( function extracts the fractional part of the real number input as its argument. Syntax: Frac({n}) Example: To extract the fractional part of –1.5 b z – {MATH}c3(Frac)-1.5)E A Largest Integer (Intg) The Intg( function determines the largest integer that does not exceed the real number input as its argument.
k ENG Conversion Examples Example 1: To convert 1234 to engineering notation using ENG/ B 1234E 1/(ENG) 1/(ENG) Example 2: To convert 123 to engineering notation using ENG, B 123E 1*(ENG) 1*(ENG) k Using Engineering Symbols Your calculator supports the use of ten engineering symbols (m, ƫ, n, p, f, k, M, G, T, P) that you can use for input of value or for calculation result display. You can use engineering symbols in calculations in all calculation modes, except for the BASE-N Mode.
A Inputting Values Using Engineering Symbols Example: To input 500 k 500 z – {MATH}ccc 6(k) A Using ENG (10 ) Conversion while Engineering Symbols Turned on (EngOn) 3 Performing ENG conversion while “EngOn” is selected for engineering symbols (page 13) will move the decimal point three places to the right, and change the engineering symbol accordingly (from M to k, for example).
Example: To input 2 + 3i 2+3i A Inputting Complex Number Values Using Polar Coordinate Format Complex numbers can also be input using polar coordinate format (r ∠ Ƨ). Example: To input 5 ∠ 30 51i(∠)30 Important! When inputting argument Ƨ, enter a value that indicates an angle in accordance with the calculator’s current default angle unit setting. k Complex Number Display Setting See “Specifying the Complex Number Display Format” (page 13).
Example 1: 2 × (' 3 + i) = 2' 3 + 2i = 4 ∠ 30 Bv 2*(!3e+i)E b 2*(!3)+i)E When using linear display format, calculation results are displayed in two lines showing the absolute value and argument. Example 2: 1 + i = ' 2 ∠ 45 Bv 1+iE k Conjugate Complex Number (Conjg) You can perform the operation below to obtain conjugate complex number z̄ = a – bi for the complex number z = a + bi.
Argument: z – {COMPLX}2(Arg)2+2i)E k Extracting the Real Part (ReP) and Imaginary Part (ImP) of a Complex Number You can use the following operations to extract the real part (a) or imaginary part (b) of complex number a + bi.
Matrix Calculations (COMP) To perform the example operations in this section, first select COMP (N1) as the calculation mode. k Matrix Calculation Overview Matrix calculations are performed by first storing the matrices in one of six matrix memory areas named Mat A through Mat F, and then using the matrix area variables to perform the 20 12 + actual calculation. To perform a matrix calculation like , for example, you would 02 34 12 20 into Mat A and into Mat B, when perform the calculation Mat A + Mat B.
A Using the Matrix Editor Screen to Input Matrix Data 1. Press z – {MATRIX}1(EDIT) to display the matrix memory area menu. • A memory area that already contains a matrix will show the dimensions of its matrix (like 2 × 2), while an area that is empty will be indicated by “None”. 2. Use c and f to move the highlighting to the matrix you want to use for data input. 3. Press E. • This displays a screen for specifying the dimensions of the matrix. m is the number of rows, while n is the number of columns.
2. Input the value assignment command (/). z – {PROG} – {/} 3. Specify the matrix memory (Mat A to Mat F or Mat Ans) where you want to store the matrix. • To store it in Mat A, for example, perform the following key operation: z – {MATRIX}2(Mat)Si(A). Important! If you specify a matrix memory that already contains matrix data, the existing data will be overwritten with the data you input here. 4. To store the matrix, press E. • This displays the stored matrix on the screen.
k Performing Matrix Calculations This section presents a number of actual examples of matrix calculations. • Before performing matrix calculations, you need to perform the procedure under “Inputting and Editing Matrix Data” (page 59) to input data into the matrices you plan to use in the calculations. • The table below shows the matrix name notation used in this section. When you see a matrix name in a procedure, you need to perform one of the key operations shown below.
E Note While a calculation screen is on the display, you can input the Mat Ans variable by pressing z – {MATRIX}2(Mat)1-(Ans). A Calculating the Scalar Multiplication of a Matrix Your calculator supports the following types of scalar multiplication calculations. n × Mat A, n Mat A, Mat A × n, Mat A ÷ n • You can replace “Mat A” with any of the calculator’s matrices, from Mat A to Mat F, or Mat Ans.
A Obtaining the Determinant of a Matrix The det( function can be used to obtain the determinant of a square matrix. det a11 = a11 det a11 a12 = a11a22 – a12a21 a21 a22 a11 a12 a13 det a21 a22 a23 = a11a22a33 + a12a23a31 + a13a21a32 – a13a22a31 – a12a21a33 – a11a23a32 a31 a32 a33 Example: To obtain the determinant of the matrix 1 –2 . 5 0 This example assumes that Mat C contains 1 –2 .
a11 a12 a13 a21 a22 a23 a31 a32 a33 –1 = a22a33 – a23a32 –a12a33 + a13a32 a12a23 – a13a22 –a21a33 + a23a31 a11a33 – a13a31 –a11a23 + a13a21 a21a32 – a22a31 –a11a32 + a12a31 a11a22 – a12a21 a11a22a33 + a12a23a31 + a13a21a32 – a13a22a31 – a12a21a33 – a11a23a32 Important! • Matrix inversion is supported for a non-zero square matrix only. –1 –1 • Use the !)(x ) key to input “ ”. 1 –2 Example: To invert the matrix . 5 0 This example assumes that Mat C contains 1 –2 .
A Selecting the Sequence Type To select this sequence type: Perform this key operation: an Type z – {TYPE}1(an) an+1 Type z – {TYPE}2(an+1) A Sequence Editor Screen Either of the sequence editor screens shown below appears immediately after you enter the RECUR Mode and select the sequence type. Use this screen to input the expression that defines the expression (general term or recursion formula).
3. After inputting everything you want, press E. • This registers your input. If you input expressions, the calculation result of the expression is registered. • While any setting is highlighted, press E to display the sequence table screen (page 67). Returning to the Sequence Editor Screen from the Table Range Screen Press J.
k Creating a Sequence Table A Creating an an+1 Type Sequence Table Example: To create a sequence table with the recursion formula an+1 = an+ n + 1 using a range of 1 < n < 10 (n = integer). Note, however, that a1 = 2. N6(RECUR) Enter the RECUR Mode: Select the an+1 type: z – {TYPE}2(an+1) Input the recursion formula: z2(an)+z1(n)+1 Register the recursion formula: E (This displays the table range screen.
Register the general term: E (This displays the table range screen.) Input Start = 2 and End = 6: 2E6E Create the sequence table: E (This displays the sequence table screen.) k Sequence Calculation Precautions The following functions cannot be used during sequence calculations.
1. Press N8(EQN). • This displays an initial EQN type menu like the one shown below. 2. Press 1(aX+bY=c) to select simultaneous linear equations with two unknowns. • This displays a coefficient editor screen like the one shown below. You can use this screen to input values for the equation’s coefficients. 3. Input values for the coefficients. 1E0.5E3E2E3E4E X + 0.5Y = 3 2X + 3Y = 4 These values will produce the simultaneous equations shown above. 4. To display the solutions, press E.
k Selecting an Equation Type The following shows the operations you can use to select an equation type.
k Viewing Equation Solutions Pressing E while the coefficient editor is displayed will display the solutions of the equation. Equation solution • You can use c and f to scroll forward and back through the solutions. • You can also press E while a solution is displayed to cycle through all of the other available solutions. Pressing E while the final solution is displayed will return to the coefficient editor screen. • To exit the solution screen and return to the coefficient editor screen, press J.
A Inputting Sample Data The following example shows how to input the following sample data in the SD Mode. Class Value (X) Frequency (FREQ) 24.5 4 25.5 6 26.5 2 Enter the SD Mode: N3(SD) Input the class values in the X column: 24.5E25.5E26.5E The initial default for all frequencies is 1.
• Even though Y-data is not used and there is no indication of Y-data on the screen in the SD Mode, the calculator still maintains a Y-value (always zero) internally for each X-data. Because of this, if you perform a statistical calculation operation that involves Y-data (such as Σy) after inputting single-variable data in the SD Mode, the calculator will produce a result without displaying an error.
2. Press z5(STAT)1(Edit)4(Del Cell). • This deletes the cell where the cursor is located and shifts everything below it upwards. A new cell is inserted at the bottom of the column where the cell is deleted. (Del Cell) • The new cell that is inserted at the bottom of the column is filled in with the applicable initial default value (X = 0, Y = 0, or FREQ = 1).
z7(STAT)2(VAR) 2(o)E This is one example of possible calculation results. For more information about statistical calculation commands, see the following section. A SD Mode Statistical Command Reference z7(STAT)2(VAR)1 n Obtains the number of samples. n = (number of xi-data items) z7(STAT)2(VAR)2 x¯ Σx o= ni Obtains the mean. xσn z7(STAT)2(VAR)3 Obtains the population standard deviation. Σ(xi – o)2 n xσn = xσn–1 z7(STAT)2(VAR)4 Obtains the sample standard deviation.
z7(STAT)2(VAR)cc2 maxX Determines the maximum value of the samples. z7(STAT)3(DISTR)1 P( For the argument t, determines the probability of standard normal distribution P(t). P (t) P (t) = 1 2π ∫ ∞t e − x2 dx 2 − 0 t z7(STAT)3(DISTR)2 Q( For the argument t, determines the probability of standard normal distribution Q(t). Q (t) Q (t) = 1 2π ∫ t − 0 e x2 2 dx 0 t z7(STAT)3(DISTR)3 R( For the argument t, determines the probability of standard normal distribution R(t).
A Displaying the Statistical Calculation Result Screen In the REG Mode, you can display a screen that lists the results of standard deviation and sum calculations. You can also display results for a specific type of regression calculation. Note • Calculation results can be displayed up to 10 digits. • To return to the STAT editor screen from the calculation result screen, press J.
2. Press the key that corresponds to the type of regression whose results you want to display. To display the results of this type of regression calculation: Press this key: Linear (y = ax + b) 1(Line) 2 Quadratic (y = ax + bx + c) 2(Quad) Logarithmic (y = a + b ln x) 3(Log) e Exponential (y = aebx) 4(eExp) ab Exponential (y = abx) 5(abExp) Power (y = axb) 6(Power) Inverse (y = a + b/x) 7(Inv) (Example screen when 1 is pressed) This is one example of possible calculation results.
A Performing a Specific Regression Calculation Example: To use the statistical data shown below to perform logarithmic regression to obtain the correlation coefficient and the estimated value of y when x = 100 x y 29 50 74 103 118 1.6 23.5 38.0 46.4 48.9 1. Display the logarithmic regression calculation result screen. z6(RESULT)2(Reg)3(Log) 2. Press J to return to the STAT editor screen. 3. Press z1(/COMP) to display the COMP Mode calculation screen. 4.
z7(STAT)2(VAR)2 x¯ Obtains the mean of the sample x-data. Σx o= ni xσn z7(STAT)2(VAR)3 Obtains the population standard deviation of the sample x-data. Σ(xi – o)2 n xσn = xσn–1 z7(STAT)2(VAR)4 Obtains the sample standard deviation of the sample x-data. xσn –1 = Σ(xi – o)2 n–1 z7(STAT)2(VAR)5 y¯ Obtains the mean of the sample y-data. Σy p = ni yσn z7(STAT)2(VAR)6 Obtains the population standard deviation of the sample y-data.
z7(STAT)2(VAR)c3 ƙy2 Obtains the sum of squares of the sample y-data. Σy2 = Σyi2 z7(STAT)2(VAR)c4 ƙy Obtains the sum of the sample y-data. Σy = Σyi z7(STAT)2(VAR)c5 ƙxy Obtains the sum of products of the sample x-data and y-data. Σxy = Σxiyi z7(STAT)2(VAR)c6 ƙx 3 Obtains the sum of cubes of the sample x-data. Σx3 = Σxi3 z7(STAT)2(VAR)c7 ƙx2y Obtains the sum of squares of the sample x-data multiplied by the sample y-data.
Regression Coefficient and Estimated Value Commands The values obtained by the following commands depend on the regression formula used for the calculation. The regression formula used is the one that is applicable for the regression calculation result screen (page 78) that was last displayed in the REG Mode. z7(STAT)2(VAR)ccc1 a Obtains coefficient a of the regression formula. z7(STAT)2(VAR)ccc2 b Obtains coefficient b of the regression formula.
For more information about this type of regression calculation: Go here: Power Regression <#07> Inverse Regression <#08> k Statistical Calculation Examples This section provides some actual examples of statistical calculation examples as they are performed on your calculator. Example 1: The nearby table shows the pulse rates of 50 students who attend a high school for boys that has a total enrollment of 1,000 students. 1 Determine the mean and standard deviation of the sample data.
Example 2: The nearby data shows how the weight of a newborn at various numbers of days after birth. Number of Days Weight (g) 1 Obtain the regression formula and correlation coefficient produced by linear regression of the data. 2 Obtain the regression formula and correlation coefficient produced by logarithmic regression of the data. 3 Predict the weight 350 days after birth based on the regression formula that best fits the trend of the data in accordance with the regression results.
Base-n Calculations (BASE-N) To perform the example operations in this section, first select BASE-N (N2) as the calculation mode. k Performing Base-n Calculations When you press N2 to enter the BASE-N Mode, the current setup appears on the display as shown below. Number base indicator Negative value setting indicator Number base indicator: Indicates the current number base (see table below).
A Hexadecimal Value Input and Calculation Example Use the following keys to input the letters required for hexadecimal values (A, B, C, D, E, F).
Example: To convert the decimal value 3010 to binary, octal, and hexadecimal format ox(DEC)30E i(BIN) 6(OCT) l(HEX) k Specifying a Number Base for a Particular Value You can specify a number base that is different from the current default number base while inputting a value. A Specifying the Number Base during Input Inputting a decimal value of 3, for example, can be performed using the following key operation.
A Example Calculation Using Base-n Specification Example: To perform the calculation 510 + 516, and display the result in binary oi(BIN) z1(BASE-N)1(d)5+ z1(BASE-N)2(h)5E k Performing Calculations Using Logical Operations and Negative Binary Values Your calculator can perform 32-digit (32-bit) binary logical operations and negative value calculations. All of the examples shown below are performed with binary (i(BIN)) set as the default number base.
Example: 11112 xnor 1012 = 111111111111111111111111111101012 1111z1(BASE-N) c6(xnor)101E A Complement/Inversion (Not) Returns the result of a complement (bitwise inversion). Example: Not(10102) = 111111111111111111111111111101012 z1(BASE-N)c2(Not) 1010)E A Negation (Neg) Returns the two’s complement of a value. Negation is supported only when the negative value setting is “Signed”.
Example: To assign the values A = 5, B = 3 and A = 5, B = 10 for the expression 3 × A + B b 3*S0(A)+S'(B) s (This displays the value assignment screen.) Assign A = 5 and B = 3: 5E3E Execute the calculation: E Display the value assignment screen again: s Leave A the way it is, and assign 10 to B: c10E Execute the calculation: E Note • If natural display is selected for the calculator’s display format, the value assignment screen shows only one variable at a time.
A Displaying Comment Text on the Value Assignment Screen You can use the following syntax to add comment text to an expression you input with CALC: "comment text" : {calculation expression}. The comment text will appear in the top line of the value assignment screen in place of the expression.
. (This displays the value assignment screen.) 0E 1E 1E -2E Assign 0 to Y: Assign 1 to A: Input an initial value for X (Here, input 1): Assign –2 to B: Specify the variable you want to solve for: f (Here we want to solve for X, so move the highlighting to X.) Solve the equation: . • Press E to return to the value assignment screen. Then you can assign different values to the variables, change the initial value, and solve again.
• Due to the characteristics of Newton’s Law, the following scientific functions tend to make it difficult to obtain solutions. - Periodic functions (like y = sin(x)) 1 - Functions that produce steep slopes when graphed (like y = ex, y = x ) x ) - Discontinuous functions (like y = ' A Solution Screen Contents The SOLVE solution screen displays the information shown below. b Equation (The equation you input.
A Expression Editor Screen The expression editor screen appears first when you enter the TABLE Mode. You can use this screen to input the function of variable X, which will be used for generation of a number table. Inputting on the Expression Editor Screen 2 Example: To input f (x) = x + B 1 2 S0(X)x+'1c2 Note • To clear the screen during input, press o.
A Number Table Screen When you press E in step 3 under “Specifying the Start Value, End Value, and Step”, the calculator will perform the number table calculation in accordance with the function expression, start value, end value, and step that you have input, and display the result on the number table screen. • Each of cells on the number table screen shows up to six digits of the value currently stored in the cell. • To see the full value in a cell, move the highlighting to it.
Register the function expression: E (This displays the table range screen.) Input Start = 1, End = 5, and Step = 2: 1E5E2E Create the number table: E (This displays the number table screen.) k Number Table Creation Precautions The precautions for number table creation are identical to the RECUR Mode precautions. For more information, see “Sequence Calculation Precautions” on page 69. Built-in Formulas Your calculator comes with 128 different mathematic and scientific formulas.
A Searching for a Built-in Formula by Scrolling through the Menu 1. Press G. 2. Use c and f to scroll through the built-in formula names until the one you want to recall is selected. A Performing Calculation with a Built-in Formula The following example shows how to use Heron’s formula to determine the area of a triangle when the lengths of its three sides (8, 5, 5) are known.
Use the e and d keys to scroll the formula right and left. Press J or w to return to the screen that was displayed before you pressed z6(LOOK). k Built-in Formula Names For details about the calculation formula used by each built-in formula, see <#09> in the separate Supplement. No.
No.
No.
No.
• Here you can execute the user formula you just saved by pressing w. 4. Press J to close the Fmla List screen. 5. Press ,5(PROG) to enter the PROG Mode. 6. Press 3(EDIT). • This displays the Prog Edit or Fmla Edit file menu. • If the Prog Edit file menu is displayed, press e to change to the Fmla Edit file menu. → 7. Use c and f to move the highlighting to the name of the program you entered in step 3, and then press w. • This displays the formula editing screen. 8.
A Formula Editing Screen Operations The formula editing screen is used for saving a built-in formula under a new name, for editing a formula, and for creating a new formula. You can perform the following operations on the formula editing screen. • The formula editing screen supports input for calculation formulas that can be input using CALC (page 90). As with CALC, you can also input comment text that appears when you display the calculation formula.
k Program Mode Overview A Specifying a Program Run Mode Whenever you create a new program, you need to specify its “run mode”, which is the calculator mode where the program will run. There are three run modes: COMP, BASE-N, and Formula.
The following are the formulas for determining the surface area (S) and volume (V) of a regular octahedron when the length of one side (A) is known. 2 3 2 S = 2' 3A ,V='A 3 The following program prompts for input of A and then outputs S and V in accordance with the above programs. "A" ?→A 2 2 × '(3) × A ^ 3 '(2) ÷ 3 × A • Specify COMP as the run mode for the program, and assign the file name “OCTAHEDRON”. Operation Procedure 1. Press N5(PROG) to enter the PROG Mode. • This displays the Program Menu screen.
6. After you finish inputting the entire program, press J. • This will display the Prog Edit file menu (page 108). The name of the program you just input will be highlighted (selected) on the screen. 7. Try running the program you just created (OCTAHEDRON). Press J to display the Program Menu screen, and then press 2(RUN). • This displays the Prog List screen. Pressing E will run the program whose name is currently highlighted (selected) on the Prog List screen. 8.
A Program Commands Selecting z – {PROG} on the program editing screen will display a menu of program commands that you can use for command input. z – {PROG} c f c f Note • The program commands that appear on the menu for input depend on the program run mode. For more information, see the “Command Reference” (page 113). • You can also use the above procedure to input commands while the COMP Mode or BASE-N Mode calculation screen is on the display.
4. Use e and d to move the cursor around the program, and perform the required operations to edit the contents of the program or to add new contents. • You can press 1f to jump to the beginning of the program, while 1c jumps to the end. 5. After program contents are the way you want, press J. k Running a Program An existing program can be executed from the COMP Mode, BASE-N Mode, or PROG Mode.
Pressing J will display the program editing screen, with the cursor located at the point where execution was interrupted. A Using the Prog Command to Run a Program The Prog command can be used to specify a program file name and run that program directly from the COMP Mode or BASE-N Mode. Perform the procedure below in the COMP Mode or BASE-N Mode. Important! An error (Go ERROR) will occur if there is no program with the file name you specify with the Prog command.
Note The mode that the calculator will enter automatically when you clear an error message depends on the program’s run mode, as shown below. Program Run Mode Calculation Mode COMP Mode or Formula Mode COMP Mode BASE-N Mode BASE-N Mode PROG Mode Clearing an error message will display the editing screen for the program, with the cursor located at the location where the error was generated so you can correct the problem.
A Adding a File Name to “Favorites” You can add the file name of an often-used program to “Favorites”, which will cause the name to be displayed at the top of the file screens. Operation Procedure 1. On a file screen, highlight the name of the file you want to add to “Favorites”. 2. Press z1(Favorite-Add). • This displays the file name at the top of the file screens. Note • A file name added to “Favorites” is displayed both at the top of the file screens, and at its normal alphabetic location in the file screens.
To delete a program with this run mode: Display this screen: COMP or BASE-N Prog Delete file menu Formula Fmla Delete file menu 3. Use c and f to move the highlighting to the name of the program you want to delete and then press E. • This will cause the “Delete File?” confirmation message to appear. 4. To delete the specified program, press E(Yes). To cancel the operation without deleting anything, press J(No). A Deleting All Programs 1. Press N5(PROG)4(DELETE)2(All Files).
Example 2 2 ? → A : A : Ans ^ (Output Command) Syntax Function Example Note (1x) ^ Pauses program execution and displays the result of the current execution. The Q symbol is turned on while program execution is paused by this command. 2 2 ? → A : A ^ Ans Program execution paused by the ^ command can be resumed by pressing the E key, which will resume execution from the command following the ^ command.
Note These commands evaluate the expressions on either side, and return 1 if true and 0 if false. A Jump Commands Goto ~ Lbl Syntax Function Example Important! Goto n : .... : Lbl n or Lbl n : .... : Goto n (n is an integer from 0 to 9, or a variable name from A through Z.) Execution of Goto n jumps to corresponding Lbl n. ? → A : Lbl 1 : ? → B : A × B ÷ 2 ^ Goto 1 A Go ERROR occurs if there is no corresponding Lbl n in the same program where Goto n is located.
Example Lbl 1 : ? → A : A > 0 S '(A) ^ Goto 1 A Control Structure Commands: If Statements The If statement is used to control program execution branching according to whether the expression following If (which is the branching condition) is true or false. If Statement Precautions • An If statement must always be accompanied by a Then statement. Using an If without a corresponding Then will result in a Syntax ERROR.
For ~ To ~ Step ~ Next Syntax Function Example (COMP) For → To Step : : ... : Next : ... Execution of the statements from For to Next repeats as the control variable is incremented by the step amount with each execution, starting from the starting value. Except for that, this command is the same as For~To~Next. 2 For 1 → A To 10 Step 0.
Function Executes another separate program (subroutine) from the current program (main routine). Subroutines Main Routine Level 1 Level 2 Level 3 Level 4 • A subroutine can be called up as many times as you like from the main routine. A subroutine can be called up from any number of main routines. • Execution of the Prog "file name" command jumps to the subroutine and runs it from the beginning.
Return Syntax Function Example (COMP) ... : Return : ... Returns from a subroutine to the program from the program that called the subroutine. In a main routine, this command terminates the program. Main Routine Subroutine (File Name: SB) 1 → A : Prog "SB" : C^ For A → B To 10 : B + 1 → C : Next : Return Stop Syntax Function Example (COMP) ... : Stop : ... Forces termination of program execution.
Cls Syntax Function ... : Cls : ... Clears all expressions and calculation results from the display. Locate Syntax Function Example Locate , , Locate , , Locate , , "" (1 < row number < 4, 1 < column number < 16) Displays the specified value or character string at the specified screen location.
A Clear Commands You can input data clear commands from the menu that appears when you select z – {CLR}. ClrStat Syntax Function ClrStat Clears all list data (List X, List Y, List Freq). ClrMemory Syntax Function Note ClrMemory Clears all variables (A through Z) and Ans memory to zero. To clear a specific variable, use 0 → . ClrMat Syntax Function ClrMat Clears the contents of all matrix memories (Mat A to Mat F, and Mat Ans). ClrVar Syntax Function ClrVar Clears all formula variables.
Function Example Important! List X, List Y, and List Freq correspond respectively to the X-column, Y-column, and the FREQ-column of the STAT Mode’s STAT editor screen. The List command is used in combination with X (S0), Y (S.), Freq (z – {STAT}1(LIST)2) to perform the operations described in parentheses, above. 1 ? → A : {A , A + 2 , A + 3} → List X 2 ? → A : ? → B : A → List Y [B] 3 ? → A : List X [A] ^ List X [A + 1] A Regression Commands: z – {STAT}4(Reg) LinearReg, etc. Syntax Function (COMP) ...
Display Format Setting Commands Fix Syntax Function (COMP) ... : Fix : ...(n is an integer from 0 to 9.) Fixes the number of decimal places (from 0 to 9) for output of calculation results. Sci Syntax Function (COMP) ... : Sci : ...(n is an integer from 0 to 9.) Fixes the number of significant digits (from 1 to 10) for output of calculation results. 0 for n (Sci 0) will specify 10 significant digits. Norm Syntax Function (COMP) ... : Norm <1 ; 2> : ...
A Base-n Commands Dec, Hex, Bin, Oct Syntax Function (BASE-N) ... : Dec : ... / ... : Hex : ... / ... : Bin : ... / ... : Oct : ... These commands specify the number base for Base-n calculations. Signed, Unsigned Syntax Function (BASE-N) ... : Signed : ... ... : Unsigned : ... These commands specify whether Base-n calculation values are signed (negative values allowed) or unsigned (negative values not allowed). A Rounding (Rnd) Command Rnd( (COMP) Syntax Function ... : : Rnd(Ans : ...
A Transferring All Programs 1. Perform the following operation on the receiving calculator (Receiver). Nc1(LINK)2(Receive) • This will put the Receiver into receive standby, which is indicated by “Receiving...” on its display. 2. Perform the following operation on the sending calculator (Sender). Nc1(LINK)1(Transmit)1(All) 3. To start data transfer, press the Sender’s E key. • During data transfer, the screen of the Sender will show the message shown to the right.
3. On the Sender, use c and f to move the highlighting to the program you want to transfer, and then press 1(SEL). • This will cause a “'” mark to appear to the left of the file name, indicating that it is selected for transfer. Each press of 1(SEL) will toggle display of the “'” mark next to the file name on (selected) and off (not selected). • Repeat step 3 until there is a “'” mark next to the names of all the programs you want to transfer. 4.
To perform the example operations in this section, first select MEMORY (Nc2) as the mode. • This will display the Memory Manager screen, which provides a menu of the different types of data in memory. k Deletable Data Types and Supported Delete Operations The following lists the types of data you can delete using Memory Manager.
3. Repeat steps 1 and 2 as required to select all of the data names you want. A Selecting Specific Data Items within a Folder 1. Use c and f to move the highlighting to the name of the data folder that contains the data want to delete. 2. Press E to enter the folder. • This will display a menu of all the data items contained in the folder. 3. Use c and f to move the highlighting to the name of the data you want to delete, and then press 1(SEL).
Sequence Operation Type Description 1 Parenthetical Functions Pol(, Rec( 2 2 ∫(, d/dx(, d /dx (, Σ(, P(, Q(, R( –1 –1 –1 sin(, cos(, tan(, sin (, cos (, tan (, sinh(, cosh(, –1 –1 –1 tanh(, sinh (, cosh (, tanh ( 3 log(, ln(, e^(, 10^(, '(, '( Arg(, Abs(, ReP(, ImP(, Conjg( Not(, Neg(, Det(, Trn(, Rnd( Int(, Frac(, Intg( 2 Functions Preceded by Values Power, Power Root Standardized Variate Percent ENG Notation x2, x–1, x!, °’ ”, °, r, g ^(, x'( 't % m, ƫ, n, p, f, k, M, G, T, P 3 Fractions a b/c
• Multiplication and division, and multiplication where the sign is omitted are the same priority (Priority 7), so these operations are performed from left to right when both types are mixed in the same calculation. Enclosing an operation in parentheses causes it to be performed first, so the use of parentheses can result in different calculation results. b/c0w b/(c0)w 1 ÷ 2i = 0.5i 1 ÷ (2i) = – 0.
Functions cosx tanx sin–1x cos–1x tan–1 x sinhx coshx Input Range DEG 0 < | x | < 9×109 RAD 0 < | x | < 157079632.7 GRA 0 < | x | < 1×1010 DEG Same as sinx, except when | x | = (2n–1)×90. RAD Same as sinx, except when | x | = (2n–1)×π/2. GRA Same as sinx, except when | x | = (2n–1)×100. 0<|x|<1 0 < | x | < 9.999999999×1099 0 < | x | < 230.2585092 sinh–1x 0 < | x | < 4.999999999×1099 cosh–1x 1 < x < 4.999999999×1099 tanhx 0 < | x | < 9.999999999×1099 tanh–1 0 < | x | < 9.
Functions Input Range x > 0: –1×10100 < ylog x < 100 x = 0: y > 0 m x < 0: y = n, 2n+1 (m, n are integers) However: –1×10100 < ylog | x | < 100 y > 0: x G 0, –1×10100 < 1/x logy < 100 y = 0: x > 0 y < 0: x = 2n+1, 2n+1 (m G 0; m, n are integers) ^(xy) x' y m However: –1×10100 < 1/xlog | y | < 100 Total of integer, numerator, and denominator must be 10 digits or less (including separtor symbols).
Error Message Math ERROR Cause Action • An intermediate or the final result of the calculation falls outside of the allowable calculation range. • An input value is outside the allowable input range. • You are trying to perform an illegal mathematical operation (such as division by zero). • Check your input values and reduce the number of digits, if required.
Error Message Cause Action Memory ERROR • An attempt was made to recall data • Check to make sure that the name of the data you are trying to recall (list, matrix, extra variable, formula is correct. variable, etc.) that does not exist. Go ERROR • A “Goto n” in the program being executed does not have a corresponding “Lbl n”. • The file name being called up by the Prog command does not exist. • Either add a “Lbl n” for the “Goto n” command, or delete the applicable “Goto n” command.
k Before assuming malfunction of the calculator... Perform the following steps whenever an error occurs during a calculation or when calculation results are not what you expected. If one step does not correct the problem, move on to the next step. Note that you should make separate copies of important data before performing these steps. 1 Check the calculation expression to make sure it does not include any errors.
• Normally when you replace the calculator’s battery, it stores its current memory contents in flash memory and restores them after battery replacement is complete. If you continue to use the calculator without replacing the battery after the above message appears, the calculator will eventually lose its ability to store data to flash memory. When this happens, the calculator will not be able to restore memory contents after battery replacement.
6. Slide the battery cover back into its original position, and secure it in place with the screw. 7. Press the P button on the back of the calculator with a thin, pointed object to initialize the calculator. Be sure to perform this step! Do not skip it! A Auto Power Off Your calculator will turn off automatically if you do not perform any operation for about 10 minutes. If this happens, press the o key to turn the calculator back on.
MEMO E-138
MEMO E-139
MEMO E-140
MEMO E-141
MEMO E-142
MEMO E-143
MEMO E-144
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