EN fx-82EX fx-85EX fx-350EX 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 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. FIX A fixed number of decimal places is in effect. SCI A fixed number of significant digits is in effect.
General calculations (Calculate) Statistical and regression calculations (Statistics) Generate a number table based on one or two functions (Table) 3. Press to display the initial screen of the mode whose icon you selected. Note: The initial default calculation mode is the Calculate Mode.
Note: The initial default input/output format setting is MathI/MathO. Configuring the Calculator Setup To change the calculator setup 1. Press (SETUP) to display the setup menu. 2. Use and to scroll the setup menu, and then input the number displayed to the left of the item whose setting you want to change. Items and Available Setting Options “◆” indicates the initial default setting.
Up to four lines can be displayed while Normal Font is selected, and up to six lines can be displayed with Small Font. To initialize calculator settings (except the Contrast setting) (RESET)(Setup Data)(Yes) 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.
8 Permutation (nPr), combination (nCr) 9 Multiplication (×), division (÷) 10 Addition (+), subtraction (−) 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. Always keep the priority sequence in mind, and enclose negative values in parentheses when required.
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. You can toggle between the insert and overwrite modes by performing the operations: (INS). The cursor appears as “” in the insert mode and as “” in the overwrite mode.
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.
• One of the prime factors of the value is 1,018,081 or greater. • Two or more of the prime factors of the value have more than three digits. The part that cannot be factored will be enclosed in parentheses on the display. Calculation History and Replay Calculation History An and/or at the top of the display indicates that there is more calculation history content above and/or below. You can scroll through calculation history contents using and . 2+2=4 22 3+3=6 33 (Scrolls back.
0(A) 0 *1 Input a variable as shown here: press and then press the key that corresponds to the desired variable name. *2 Pressing (RECALL) displays a screen that shows the values currently assigned to variables A, B, C, D, E, F, M, x, and y. On this screen, values are always displayed using the “Norm 1” Number Format. To close the screen without recalling a variable value, press . Independent Memory (M) You can add calculation results to or subtract results from independent memory.
90 (π)2(Angle Unit)(r) *2 Depending on the calculation mode, you should press . , : Exponential functions. e5 × 2 = 296.8263182 (MathI/MathO) 296.8263182 () 52 (LineI/LineO) 296.8263182 () 52 log: Logarithmic function. Use to input logab as log (a, b). Base 10 is the default setting if you do not input anything for a.
Ran#: Function that generates a pseudo random number in the range of 0.000 to 0.999. The result is displayed as a fraction when MathI/MathO is selected for Input/Output on the setup menu. To obtain random three-digit integers 459 1000(Ran#) (The result differs with each execution.) RanInt#: Function that generates a pseudo random integer between a specified start value and end value. To generate random integers in the range of 1 to 6 2 (RanInt)1(,) 6 (The result differs with each execution.
Note: When you want to change the calculation type after entering the Statistics Mode, perform the key operation (Select Type) to display the calculation type selection screen. Inputting Data with Statistics Editor Statistics Editor displays one, two, or three columns: single-variable (x), single variable and frequency (x, Freq), paired-variable (x, y), pairedvariable and frequency (x, y, Freq).
Obtaining Statistical Values from Input Data You can use the operations in this section to recall statistical values assigned to variables (σx, Σx2, etc.) based on the data you input with the Statistics Editor. You can also use the variables in calculations. The operations in this section are performed on the statistical calculation screen that appears when you press while the Statistics Editor is displayed. Supported statistical variables and the keys you should press to recall them are shown below.
(Regression)(r) (Regression)(a) (Regression)(b) 0.998 -3857.984 2357.532 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 (two values, x1 and x2, in the case of quadratic regression) also can be calculated for a value of y in the regression formula.
• If there is value in the x cell above the currently highlighted x cell, pressing or automatically inputs into the highlighted cell the value equal to the value of the cell above it plus the step value. So also, 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.
→ Narrow the table calculation range by changing the Start, End, and Step values, and try again. Before Assuming Malfunction of the Calculator... Note that you should make separate copies of important data before performing these steps. 1. Check the calculation expression to make sure that it does not contain any errors. 2. Make sure that you are using the correct mode for the type of calculation you are trying to perform. 3. If the above steps do not correct your problem, press the key.
In general, ±1 at the 10th digit for a single calculation. Precision for exponential display is ±1 at the least significant digit. Errors are cumulative in the case of consecutive calculations. Precision Function Calculation Input Ranges and Precision Functions sinx cosx Input Range Degree 0 ≦ |x| < 9 × 109 Radian 0 ≦ |x| < 157079632.7 Gradian 0 ≦ |x| < 1 × 1010 tanx Degree Same as sinx, except when |x| = (2n−1) × 90. Radian Same as sinx, except when |x| = (2n−1) × π/2.
Rec(r, θ) 0 ≦ r ≦ 9.999999999 × 1099 θ: Same as sinx °’ ” |a|, b, c < 1 × 10100 ; 0 ≦ b, c The display seconds value is subject to an error of ±1 at the second decimal place.
Approximate Weight: fx-82/350EX: 100 g (3.5 oz) including the battery fx-85EX: 90 g (3.2 oz) including the battery ■■ Frequently Asked Questions ■■ How can I change a fraction form result produced by a division operation to decimal form? → While a fraction calculation result is displayed, press . To have calculation results initially appear as decimal values, change the setup menu Input/Output setting to MathI/DecimalO.
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.
