EN fx-570EX fx-991EX User’s Guide CASIO Worldwide Education Website http://edu.casio.com Be sure to keep all user documentation handy for future reference.
CONTENTS About this Manual......................................................................................2 Initializing the Calculator........................................................................... 2 Precautions................................................................................................2 Getting Started.......................................................................................... 3 Calculation Mode............................................................
About this Manual • Unless specifically stated, all sample operations in this manual assume that the calculator is in its initial default setup. Use the procedure under “Initializing the Calculator” to return the calculator to its initial default setup. • The contents of this manual are subject to change without notice. • The displays and illustrations (such as key markings) shown in this User’s Guide are for illustrative purposes only, and may differ somewhat from the actual items they represent.
Getting Started Before using the calculator, slide its hard case downwards to remove it, and then affix the hard case to the back of the calculator as shown in the illustration nearby. Turning Power On and Off Press to turn on the calculator. Press (OFF) to turn off the calculator. Note: The calculator also will turn off automatically after approximately 10 minutes of non-use. Press the key to turn the calculator back on.
• The table below describes some of the typical indicators that appear at the top of the screen. The keypad has been shifted by pressing the key. The keypad will unshift and this indicator will disappear when you press a key. The alpha input mode has been entered by pressing the key. The alpha input mode will be exited and this indicator will disappear when you press a key. // Indicates the current setting of Angle Unit (: Degree, : Radian, or : Gradian) on the setup menu.
For this: Select this icon: General calculations (Calculate) Complex number calculations (Complex) Calculations involving specific number systems (binary, octal, decimal, hexadecimal) (Base-N) Matrix calculations (Matrix) Vector calculations (Vector) Statistical and regression calculations (Statistics) Distribution calculations (Distribution) Spreadsheet calculations (Spreadsheet) Generate a number table based on one or two functions (Table) Equation and function calculations (Equation/F
Input: Linear*2; Output: Converted to decimal value (LineI/DecimalO) *1 Decimal output is applied when these formats cannot be output for some reason. *2 All calculations, including fractions and functions are input in a single line. Same output format as that for models without Natural Textbook Display (S-V.P.A.M. models, etc.) Input/Output Format Display Examples MathI/MathO MathI/DecimalO LineI/LineO LineI/DecimalO Note: The initial default input/output format setting is MathI/MathO.
Example: 17(≈)* 1.4286 × 10-1 (Sci 5) Norm: Displays calculation results in exponential format when they fall within the ranges below. Norm 1◆: 10-2 > |x|, |x| ≧ 1010, Norm 2: 10-9 > |x|, |x| ≧ 1010 Example: 1200(≈)* 5 × 10-3 (Norm 1), 0.005 (Norm 2) * Pressing (≈) instead of after inputting a calculation will display the calculation result in decimal form. Engineer Symbol On; Off◆ Specifies whether or not to display calculation results using engineering symbols.
Inputting Expressions and Values Basic Input Rules When you press the priority sequence of the input calculation will be evaluated automatically and the result will appear on the display. 4 × sin 30 × (30 + 10 × 3) = 120 *1 Input of the closing parenthesis is required for sin and other functions that include parentheses. *2 These multiplication symbols (×) can be omitted. *3 The closing parenthesis immediately before the operation can be omitted.
9 Dot product (•) 10 Multiplication (×), division (÷) 11 Addition (+), subtraction (−) 12 and (logical operator) 13 or, xor, xnor (logical operators) Note: When squaring a negative value (such as -2), the value being squared must be enclosed in parentheses (2). Since x2 has a higher priority than the negative sign, inputting 2 would result in the squaring of 2 and then appending a negative sign to the result.
Using Values and Expressions as Arguments (MathI/ MathO or MathI/DecimalO only) Example: To input 1 + 7 7 and then change it to 1 + 6 6 176(INS) Pressing (INS) in the above example causes 7 to be the argument 6 of the function input by the next key operation (√). Overwrite Input Mode (LineI/LineO or LineI/DecimalO only) In the overwrite mode, text you input replaces the text at the current cursor location.
23112 136 (LineI/LineO) Note • Mixing fractions and decimal values in a calculation while something other than MathI/MathO is selected will cause the result to be displayed as a decimal value. • Fractions in calculation results are displayed after being reduced to their lowest terms. • To switch a calculation result between improper fraction and mixed fraction form, press (). Percent Calculations Inputting a value and pressing (%) causes the input value to become a percent.
Example Input and Calculations Using Engineering Symbols To input 500k 500(Engineer Symbol) 500k (k) To calculate 999k (kilo) + 25k (kilo) = 1.024M (Mega) = 1024k (kilo) = 1024000 999(Engineer Symbol)(k) 1.024M 25(Engineer Symbol)(k) 1024k 1024000 1024k (←) Prime Factorization In the Calculate Mode, a positive integer no more than 10 digits long can be factored to prime factors.
Using Memory Functions Answer Memory (Ans) The last calculation result obtained is stored in Ans (answer) memory. To divide the result of 14 × 13 by 7 1413 182 (Continuing) 7 123 + 456 = 579 789 − 579 = 210 123456 (Continuing) 789 579 210 Variables (A, B, C, D, E, F, M, x, y) You can assign values to variables and use the variables in calculations.
Clearing the Contents of All Memories Ans memory, independent memory, and variable contents are retained even if you press , change the calculation mode, or turn off the calculator. Perform the procedure below when you want to clear the contents of all memories. (RESET)(Memory)(Yes) Function Calculations Note: To interrupt an ongoing calculation before its result appears, press . Pi π: π is displayed as 3.141592654, but π = 3.14159265358980 is used for internal calculations.
(LineI/LineO) 5() 32 2 2 × 3 = 3 2 = 4.242640687... (MathI/MathO) (LineI/LineO) 3 2 23 4.242640687 23 , , : These functions use Gauss-Kronrod methods to perform numerical integration, approximation of the derivative based on central difference method, and calculation of the sum of a specific range of f(x).
20 ()(x)115 ()(x)1 (,) 1(,) 5 20 Pol, Rec: Pol converts rectangular coordinates to polar coordinates, while Rec converts polar coordinates to rectangular coordinates. • Specify the angle unit before performing calculations. • The calculation result for r and θ and for x and y are each assigned respectively to variables x and y. • Calculation result θ is displayed in the range of -180° < θ ≦ 180°.
1033 (Rnd) 1033 10.000 9.999 QR Code Function Your calculator can display QR codes* that can be read by a smart device. * QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and in other countries. Important • The operations in this section assume that the smart device being used has a QR code reader that can read multiple QR codes installed, and it can connect to the Internet.
Complex Number Calculations To perform complex number calculations, first enter the Complex Mode. You can use either rectangular coordinates (a+bi) or polar coordinates (r∠θ) to input complex numbers. Complex number calculation results are displayed in accordance with the Complex setting on the setup menu.
To store 3A + B and then substitute the following values to perform the calculation: A = 5, B = 10 3(A)(B) 510 → Using SOLVE SOLVE uses Newton’s method to approximate the solution of equations. Note that SOLVE can be used in the Calculate Mode only. SOLVE supports input of equations of the following formats.
• SOLVE uses Newton’s method, so even if there are multiple solutions, only one of them will be returned. • Due to limitations in Newton’s method, solutions tend to be difficult to obtain for equations like the following: y = sin x, 𝑦 = 𝑒𝑥, 𝑦 = 𝑥. Statistical Calculations Perform the steps below to start a statistical calculation. 1. Press , select the Statistics Mode icon, and then press . 2. On the Select Type screen that appears, select a statistical calculation type.
170173179 666875 Important: All data currently input in the Statistics Editor is deleted whenever you exit the Statistics Mode, switch between the single-variable and a paired-variable statistical calculation type, or change the Statistics setting on the setup menu. To delete a line: In the Statistics Editor, move the cursor to the line that you want to delete and then press .
Regression Coefficients: a, b / Correlation Coefficient: r / Estimated Values: 𝑥, 𝑦 (Regression) to Regression Coefficients for Quadratic Regression: a, b, c / Estimated Values: 𝑥1, 𝑥2, 𝑦 (Regression) to • 𝑥, 𝑥1, 𝑥2 and 𝑦 are commands of the type that take an argument immediately before them.
P, Q, R: These functions take the argument t and determine a probability of standard normal distribution as illustrated nearby. t: This function is preceded by the argument x. It calculates the standard variate for data value x using the mean value (− 𝑥 ) and population standard deviation (σx) of data input with Statistics Editor. 𝑥−− 𝑥 x t = 𝜎𝑥 Ex 5: For the single variable data in Ex 2, to determine the normalized variate when x = 2, and P(t) at that point.
(b) 10(o) 10 36 Converting a Calculation Result to another Type of Value You can use any one of the following key operations to convert the currently displayed calculation result to another type of value: (DEC), (HEX), (BIN), (OCT).
• This will display a solution. Each press of will display another solution. Pressing while the final solution is displayed will return to the Coefficient Editor. • A message appears to let you know when there is no solution or when there are infinite solutions. Pressing or will return to the Coefficient Editor. • You can assign the currently displayed solution to a variable.
4. Perform the following key operation: (Define Matrix)(MatB)(2 rows)(2 columns). 5. Input the elements of MatB: 2112. 6. Press to advance to the calculation screen, and perform the calculation (MatA × MatB): (MatA)(MatB). • This will display the MatAns (Matrix Answer Memory) screen with the calculation results. Matrix Answer Memory (MatAns) Whenever the result of a calculation executed in the Matrix Mode is a matrix, the MatAns screen will appear with the result.
(Transposition) MatB To invert, square, and cube MatA (MatA-1, MatA2, MatA3) Note: You cannot use for this input. Use to input “-1”, to specify squaring, and (x3) to specify cubing. MatA MatA MatA (x3) To obtain the absolute value of each element of MatB (Abs(MatB)) (Abs) MatB Creating a Number Table The Table Mode generates a number table based on one or two functions.
pressing automatically inputs the value equal to the value of the cell above less the step value. The f(x) and g(x) values in the same line are also updated accordingly. Note • After pressing in step 4 above, proceeding from step 5 onwards without inputting anything for g(x) will generate a number table for f(x) only. • The maximum number of rows in the generated number table depends on the setup menu table setting.
3. Use the Vector Editor that appears to input the elements of the vector. To edit the elements of a vector variable Press (Edit Vector), and then, on the menu that appears, select the vector variable you want to edit. To copy vector variable (or VctAns) contents 1. Use the Vector Editor to display the vector you want to copy. • If you want to copy VctAns contents, perform the following to display the VctAns screen: (VctAns). 2.
• To return to the Coefficient Editor while the solutions are displayed, press . To change the Inequality Type: Pressing (Polynomial) displays a dialog box that you can use to select an inequality degree. Changing the degree of an inequality causes the values of all Coefficient Editor coefficients to become zero.
Distribution Calculations You can use the procedures below to perform seven different types of distribution calculations. 1. Press , select the Distribution Mode icon, and then press . 2. On the menu that appears, select a distribution calculation type.
List Screen You can input up to 45 data samples for each variable. Calculation results are also displayed on the List Screen. (1) Distribution calculation type (2) Value at current cursor position (3) Data (x) (4) Calculation results (P) To edit data: Move the cursor to the cell that contains the data you want to edit, input the new data, and then press . To delete data: Move the cursor to the data you want to delete and then press .
variables N and p remain the same. This means you can repeat a calculation changing only one specific value. • On the List Screen, you can assign the value in a cell to a variable. Move the cell cursor to cell that contains the value you want to assign, press , and then press the key that corresponds to the desired variable name. • An error message appears if the input value is outside the allowable range.
To edit existing cell data 1. Move the cell cursor to the cell whose contents you want to edit, and then press (Edit Cell). • Cell contents in the edit box will change from align right to align left. A text cursor will appear in the edit box so you can edit its contents. 2. Use and to move the cursor around the contents of the cell, and edit them as required. 3. To finalize and apply your edits, press .
• Pasting data simultaneously deletes the data from the cell where you performed the cut operation, and automatically cancels paste standby. Note: In the case of a cut and paste operation, cell references do not change when pasted, regardless of whether they are relative or absolute. To copy and paste spreadsheet data 1. Move the cursor to the cell whose data you want to copy and then press (Copy & Paste). • This enters paste standby. To cancel paste standby, press . 2.
Batch Inputting the Same Formula or Constant into Multiple Cells You can use the procedures in this section to input the same formula or constant into a specific series of cells. Use the Fill Formula command to batch input a formula, or Fill Value to batch input a constant. Note: If the input formula or constant includes a relative reference, the relative reference will be input in accordance with the upper left cell of the specified range.
Scientific Constants Your calculator comes with 47 built-in scientific constants. Example: To input the scientific constant c0 (speed of light in a vacuum), and display its value 1. Press (CONST) to display a menu of scientific constant categories. 2. Press (Universal) to display a menu of scientific constants in the Universal category. 3. Press (c0). 299792458 • The values are based on CODATA (2010) recommended values.
Error Messages Math ERROR • The intermediate or final result of the calculation you are performing exceeds the allowable calculation range. • Your input exceeds the allowable input range (particularly when using functions). • The calculation you are performing contains an illegal mathematical operation (such as division by zero). → Check the input values, reduce the number of digits, and try again.
• The current differential or integration calculation ends without the ending condition being fulfilled. → Try increasing the tol value. Note that this also decreases solution precision. Circular ERROR (Spreadsheet Mode only) • There is a circular reference (such as “=A1” in cell A1) in the spreadsheet. → Change cell contents to remove the circular references. Memory ERROR (Spreadsheet Mode only) • You are attempting to input data that exceeds the allowable input capacity (1,700 bytes).
1. Press (OFF) to turn off the calculator. • To ensure that you do not accidentally turn on power while replacing the battery, slide the hard case onto the front of the calculator. 2. As shown in the illustration, remove the cover, remove the battery, and then load a new battery with its plus (+) and minus (−) ends facing correctly. 3. Replace the cover. 4. Initialize the calculator: (RESET)(Initialize All)(Yes).
tanhx 0 ≦ |x| ≦ 9.999999999 × 1099 tanh-1x 0 ≦ |x| ≦ 9.999999999 × 10-1 logx, lnx 0 < x ≦ 9.999999999 × 1099 10x -9.999999999 × 1099 ≦ x ≦ 99.99999999 ex -9.999999999 × 1099 ≦ x ≦ 230.
• Precision is basically the same as that described under “Calculation Range and Precision”, above. • xy, 𝑥 𝑦, 3 , x!, nPr, nCr type functions require consecutive internal calculation, which can cause accumulation of errors that occur with each calculation. • Error is cumulative and tends to be large in the vicinity of a function’s singular point and inflection point.
When I execute a function calculation, why do I get a calculation result that is completely different from older CASIO calculator models? → With a Natural Textbook Display model, the argument of a function that uses parentheses must be followed by a closing parenthesis. Failing to press after the argument to close the parentheses may cause unwanted values or expressions to be included as part of the argument. Example: (sin 30) + 15 (Angle Unit: Degree) Older (S-V.P.A.M.) Model: 15.
Reference Sheet Scientific Constants (CONST) (Universal) : : μ0 : lP : c0 : Z0 : tP : μB : G0 : e : KJ : me : mμ : re : λCp : μp : μμ : mn : a0 : λC : λCn : μe : mτ : u : k : c1 : F : Vm : c2 (Adopted Values) : g : KJ-90 : atm (Other) : t (Electromagnetic) (Atomic&Nuclear) (Physico-Chem) : h : ε0 : G : μN : Φ0 : RK : mp : α : γp : R∞ : μn : NA : R : σ : RK-90 Metric Conversion (CONV) (Length) (Area) (Volume) (Mass) (Veloci
Manufacturer: CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan Responsible within the European Union: CASIO EUROPE GmbH Casio-Platz 1 22848 Norderstedt, Germany This mark applies in EU countries only. SA1412-A Printed in China © 2015 CASIO COMPUTER CO., LTD.
