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Casio fx-82EX

Casio fx-82EX
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EN
fx-350EX
fx-85EX
fx-82EX
http://edu.casio.com
User’s Guide
RJA532417-001V01
CASIO Worldwide Education Website
Be sure to keep all user documentation handy for future
reference.

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Casio fx-82EX Specifications

General IconGeneral
TypeScientific
Cover-
Form factorPocket
Control typeButtons
Keys quantity50 keys
Product colorBlack
Ergonomic designYes
Conversion betweenDecimal, Percent
Convert angles from degrees toGradian, Radian
Digits192 digits
Display typeLCD
Display number of lines16 lines
Power sourceBattery

Summary

Precautions

Safety Precautions

Guidelines for safe handling and storage of the calculator and batteries.

Handling Precautions

Advice on battery replacement, environmental conditions, and care of the device.

Getting Started

Turning Power On and Off

Instructions for powering the calculator on and off.

Adjusting Display Contrast

How to change the display contrast setting for readability.

Key Markings

Explanation of keycap functions and alternate functions.

Reading the Display

How to interpret the calculator display and indicators.

Using Menus

Menu Operation

How to navigate and select items within the calculator's menus.

Calculation Mode

Selecting Calculation Modes

Steps to choose the appropriate mode for different types of calculations.

Input and Output Formats

Natural Textbook InputOutput

Setting input and output to natural textbook format with fractions or decimals.

Linear InputOutput

Setting input and output to linear format with fractions or decimals.

Configuring the Calculator Setup

General Setup Options

Settings for input/output, angle units, number format, and fraction display.

Advanced Setup Options

Settings for statistics, table mode, decimal marks, digit separators, and font.

Inputting Expressions and Values

Basic Input Rules

Fundamental rules for entering expressions and values.

Calculation Priority Sequence

Order in which mathematical operations are performed.

Inputting an Expression Using Natural Textbook Format

Using Values and Expressions as Arguments

How to use values and expressions as arguments for functions.

Toggling Calculation Results

Basic Calculations

Fraction Calculations

Methods for inputting and calculating fractions.

Percent Calculations

Degree, Minute, Second Calculations

Multi-Statements

Engineering Notation

Prime Factorization

Calculation History and Replay

Calculation History

Navigating through past calculation entries.

Replay

Editing and re-executing previous expressions.

Using Memory Functions

Answer Memory (Ans)

Stores the result of the last calculation performed.

Variables (A, B, C, D, E, F, M, x, y)

Assigning and using values in calculations.

Memory Management

Independent Memory (M)

For totaling results of multiple calculations.

Clearing All Memories

Procedure to reset all calculator memories.

Function Calculations

Trigonometric Functions

Using sin, cos, tan, and their inverses.

Hyperbolic Functions

Using sinh, cosh, tanh, and their inverses.

Exponential and Logarithmic Functions

Exponential Functions (ex, 10 x)

Calculations involving the base e and base 10.

Logarithmic Functions (log, ln)

Calculations using base 10 and natural logarithms.

Power and Root Functions

Powers and Roots (x, x, x, x)

Performing calculations with powers and roots.

Coordinate Conversion Functions

Polar and Rectangular Coordinates

Converting between rectangular and polar coordinate systems.

Factorial and Absolute Value Functions

Factorial Function (x!)

Calculating the factorial of a number.

Absolute Value Function (Abs)

Calculating the absolute value of an expression.

Random Number Functions

Pseudo Random Numbers (Ran#)

Generating random numbers within a specified range.

Random Integers (RanInt#)

Generating random integers between start and end values.

Permutation and Combination Functions

Permutations (nPr) and Combinations (nCr)

Calculating permutations and combinations.

Rounding Function (Rnd)

Statistical Calculations

Selecting Statistical Calculation Type

Choosing between single-variable and paired-variable statistics.

Inputting Data with Statistics Editor

Data Entry and Editing

Methods for inputting, inserting, and deleting data in the editor.

Obtaining Statistical Values

Recalling Statistical Variables

Accessing summation, mean, variance, and other statistical values.

Calculating Regression Coefficients

Determining coefficients for linear, quadratic, and logarithmic regressions.

Calculating Estimated Values

Creating a Number Table

Generating Number Tables

Creating tables based on one or two functions within a specified range.

Errors

Error Messages

Understanding and resolving common calculation errors.

Before Assuming Malfunction

Replacing the Battery

Technical Information

Calculation Range and Precision

Details on the calculator's computational limits and accuracy.

Function Calculation Input Ranges

Specifies input ranges and precision for various function types.

Frequently Asked Questions

Fraction to Decimal Conversion

Changing fraction results to decimal format.

Memory Types Explained

Differences between Ans, Independent, and Variable memory.

Returning to Arithmetic Mode

Key operation to switch from Statistics/Table mode to Calculate mode.

Restoring Default Settings

Procedure to initialize calculator settings to their defaults.

Function Calculation Differences

Explains why results differ from older calculator models.

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