E fx-92B Collège 2D+ User’s Guide CASIO Worldwide Education Website http://edu.casio.com CASIO EDUCATIONAL FORUM http://edu.casio.
Contents Important Information ............................................................. 2 Sample Operations .................................................................. 2 Initializing the Calculator ........................................................ 2 Safety Precautions .................................................................. 2 Handling Precautions.............................................................. 2 Removing the Hard Case ...............................................
Important Information • 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. • The contents of this manual are subject to change without notice. • In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of this product and items that come with it.
• Use a soft, dry cloth to clean the exterior of the calculator. • Whenever discarding the calculator or batteries, be sure to do so in accordance with the laws and regulations in your particular area. * Company and product names used in this manual may be registered trademarks or trademarks of their respective owners.
Reading the Display The display of the calculator shows expressions you input, calculation results, and various indicators. Input expression Indicators Math Math Calculation result • If a indicator appears on the right side of the calculation result, it means the displayed calculation result continues to the right. Use C and B to scroll the calculation result display. • If a E indicator appears on the right side of the input expression, it means the displayed calculation continues to the right.
Using Menus Some of the calculator’s operations are performed using menus. Pressing , for example, will display a menu of applicable functions. The following are the operations you should use to navigate between menus. • You can select a menu item by pressing the number key that corresponds to the number to its left on the menu screen. • The indicator in the upper right corner of a menu means there is another menu below the current one. The > indicator means another menu above.
Deg Rad Gra Specifies degrees, radians or grads as the angle unit for value input and calculation result display. Note: In this manual, the B symbol next to a sample operation indicates degrees, while the * symbol indicates radians. Fix Sci Norm Specifies the number of digits for display of a calculation result. Fix: The value you specify (from 0 to 9) controls the number of decimal places for displayed calculation results.
*1 Input of the closing parenthesis is required for sin, sinh, and other functions that include parentheses. 2 * These multiplication symbols (s) can be omitted. A multiplication symbol can be omitted when it occurs immediately before an opening parenthesis, immediately before sin or other function that includes parentheses, immediately before the Ran# (random number) function, or immediately before a variable (A, B, C, D, E, F, M, X, Y), P or e.
Inputting with Natural Display Selecting Natural Display makes it possible to input and display fractions and certain functions (x2, x3, x9, , , , x−1, 109, e9, Abs) just as they are written in your textbook. 2+' 2 1+' 2 2 1 7( ) 2 CC 7( ) 2 Important: • Certain types of expressions can cause the height of a calculation formula to be greater than one display line. The maximum allowable height of a calculation formula is two display screens (31 dots s 2).
overwrite modes by performing the operations: )(INS). The cursor appears as “I” in the insert mode and as “ ” in the overwrite mode. Note: Natural Display always uses the insert mode, so changing display format from Linear Display to Natural Display will automatically switch to the insert mode. Correcting and Clearing an Expression To delete a single character or function: Move the cursor so it is directly to the right of the character or function you want to delete, and then press ).
Basic Calculations Fraction Calculations Note that the input method for fractions is different, depending upon whether you are using Natural Display or Linear Display. 2+1= 7 3 2 6 2 3C or 2 A 3 C 1 1 2 1A2 2 3 1 2 7 6 7 6 7Y6 Note: • Mixing fractions and decimal values in a calculation while Linear Display 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.
Convert 2°15´18˝ to its decimal equivalent. 2 15 18 2°15´18˝ (Converts sexagesimal to decimal.) 2.255 (Converts decimal to sexagesimal.) 2°15´18˝ Multi-Statements You can use the colon character (:) to connect two or more expressions and execute them in sequence from left to right when you press . 3+3:3s3 3 (:) 3 3 3 6 9 Calculation History In the COMP Mode, the calculator remembers up to approximately 200 bytes of data for the newest calculation.
123 + 456 = 579 789 – 579 = 210 (Continuing) 456 123 789 Variables (A, B, C, D, E, F, X, Y) Your calculator has eight preset variables named A, B, C, D, E, F, X, and Y. You can assign values to variables and also use the variables in calculations.
1 5A2 Quotient Remainder Note: • Only the quotient value of a ÷R calculation is stored in Ans memory. • Assigning the result of a remainder division calculation to a variable will assign the quotient value only. Performing the operation 5 A 2 B(STO)4 (which assigns the result of 5÷R2 to X) will assign a value of 2 to X. • If a ÷R calculation is part of a multi-step calculation, only the quotient is passed on to the next operation.
Pol, Rec : Pol converts rectangular coordinates to polar coordinates, while Rec converts polar coordinates to rectangular coordinates. See 7 . Pol(x, y) = (r, θ) Rec(r, θ) = (x, y) Rectangular Coordinates (Rec) Polar Coordinates (Pol) x ! : Factorial function. See 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 Q is displayed Q in the range of −180° 180°. 8.
5 To calculate ln 90 (= loge 90) to three significant digits (Sci 3) (SETUP) (Sci) 7 90 4.50×100 6 1.2 s 103 = 1200 1 1200 16 15625 2 2 1 2 2 5 V ( ) 5 C 32 1 5 ( ) 32 2 = 4.242640687...) to three decimal To calculate ' 2 × 3 (= 3' places (Fix 3) (SETUP) (Fix) V( ) 2 C 3U 3' 2 U 4.243 1 V( ) 2 3U 4.243 (1+1)2+2 = 16 (52)3 = 15625 5 32 = 2 10 3 1.
12 To perform the following calculations when Fix 3 is selected for the number of display digits: 10 ÷ 3 s 3 and Rnd(10 ÷ 3) s 3 1 (SETUP) (Fix) 10 3 (Rnd) 10 3 3 3 10.000 9.999 Using CALC CALC lets you save calculation expressions that contain variables, which you can then recall and execute in the COMP Mode ( ). The following describes the types of expressions you can save with CALC.
To select this type of statistical calculation: Press this key: Single-variable (X) (1-VAR) Paired-variable (X, Y), linear regression ( y = Ax + B) (AX+B) Pressing any of the above keys ( to ) displays the Stat Editor. Note: When you want to change the calculation type after entering the STAT Mode, perform the key operation (STAT) (Type) to display the calculation type selection screen. Inputting Data Use the Stat Editor to input data.
Obtaining Statistical Values from Input Data To obtain statistical values, press while in the Stat Editor and then recall the statistical variable (Sx, 3x2, etc.) you want. Supported statistical variables and the keys you should press to recall them are shown below. For single-variable statistical calculations, the variables marked with an asterisk (*) are available.
(STAT) (Reg) (A) (STAT) (Reg) (B) Results: Linear Regression Correlation Coefficient: 0.923 Linear Regression Formula: y = 22.189 x + 3703.222 Calculating Estimated Values Based on the regression formula obtained by paired-variable statistical calculation, the estimated value of y can be calculated for a given x-value. The corresponding x-value also can be calculated for a value of y in the regression formula.
Note: • Even if Natural Display is selected, the solutions of simultaneous linear equations are not displayed using any form that includes . • Values cannot be converted to engineering notation on the solution screen. Changing the Current Equation Type Setting Press (EQN) and then select an equation type from the menu that appears. Changing the equation type causes the values of all Coefficient Editor coefficients to change to zero.
Step? Input the increment step (Default = 1). Note: The Step specifies by how much the Start value should be sequentially incremented as the number table is generated. If you specify Start = 1 and Step = 1, X sequentially will be assigned the values 1, 2, 3, 4, and so on to generate the number table until the End value is reached. • Inputting the Step value and pressing generates and displays the number table in accordance with the parameters you specified.
3. To verify, press . Math You can input the following expressions for verification in the VERIFY Mode. • Equalities or inequalities that include one relational operator 4 = 16, 4 p 3, P 3, 1 + 2 5, (3 × 6) (2 + 6) × 2, etc. • Equalities or inequalities that include multiple relational operators 1 1 1 + 1, 3 P 4, 22 = 2 + 2 = 4, 2 + 2 = 4 6, 2 + 3 = 5 p 2 + 5 = 8, etc. Note: • The verification result will cause 1 to be assigned to Ans memory when TRUE and 0 when FALSE.
3 To verify 0 2 ( 98 ) – ( 89 ) (VERIF) 0 (VERIFY) ( ) 8 9C 8 9 C7 To verify 52 = 25 = 625 (VERIF) 5 7 (VERIFY) (=) 25 (VERIFY) (=) V( ) 625 U Ratio Calculations (RATIO) The RATIO Mode lets you determine the value of X in the ratio expression a / b = X / d (or a / b = c / X) when the values of a, b, c and d are known. The following shows the general procedure for using RATIO. 1. Press (RATIO) to enter the RATIO Mode. 2.
(a/b=X/d) 1 2 10 Math To calculate X in the ratio 1 / 2 = 10 / X (RATIO) (a/b=c/X) 1 2 10 Math Calculation Ranges, Number of Digits, and Precision The calculation range, number of digits used for internal calculation, and calculation precision depend on the type of calculation you are performing. Calculation Range and Precision p1 s 10–99 to p9.
tanx Asn x Acs x Atn x logx/lnx 10x ex x ' x2 x –1 3' x x! DEG Same as sinx, except when \x\ = (2n–1) s 90. RAD Same as sinx, except when \x\ = (2n–1) s P/2. GRA Same as sinx, except when \x\ = (2n–1) s 100. 0 \x\ 1 0 \x\ 9.999999999 s 1099 0 x 9.999999999 s 1099 –9.999999999 s 1099 x 99.99999999 –9.999999999 s 1099 x 230.2585092 0 x 1 s 10100 \x\ 1 s 1050 \x\ 1 s 10100 ; x & 0 \x\ 1 s 10100 0 x 69 (x is an integer) Pol(x, y) \x\, \y\ 9.999999999 s 1099 x2 + y2 9.
Errors The calculator will display an error message whenever an error occurs for any reason during a calculation. There are two ways to exit an error message display: Pressing B or C to display the location of the error, or pressing to clear the message and calculation. Displaying the Location of an Error While an error message is displayed, press B or C to return to the calculation screen. The cursor will be positioned at the location where the error occurred, ready for input.
Insufficient MEM Error Cause: The configuration of TABLE Mode parameters caused more than 30 X-values to be generated for a table. Action: Narrow the table calculation range by changing the Start, End, and Step values, and try again. Argument ERROR Cause: A non-integer argument was input for the random number function (RanInt#). Action: Input only integers for the argument. Before Assuming Malfunction of the Calculator...
Specifications Power Requirements: AAA-size battery R03 (UM-4) s 1 Approximate Battery Life: 17,000 hours (continuous display of flashing cursor) Power Consumption: 0.0002 W Operating Temperature: 0°C to 40°C Dimensions: 13.8 (H) s 80 (W) s 162 (D) mm Approximate Weight: 100 g including the battery Frequently Asked Questions I How can I perform input and display results the same way I did on a model that does not have Natural Textbook Display? Perform the following key operation: (SETUP) (LineIO).
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.
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