CASIO

fx-83GT X/fx-85GT X
CLASSWIZ
Scientific Calculator

Before Using the Calculator

• ▶About this Manual
• ▶Initializing the Calculator
• ▶Precautions
  • Safety Precautions
  • Handling Precautions
• ▶Getting Started
  • Removing the Hard Case
  • Turning Power On and Off
  • Adjusting Display Contrast
  • Key Markings
  • Reading the Display
  • Using Menus

Calculation Modes and Calculator Setup

• ▶Calculation Mode
• ▶Configuring the Calculator Setup
  • Items and Available Setting Options
  • Initializing the Calculation Mode and Other Settings

Inputting Expressions and Values

• ▶Inputting a Calculation Expression Using Values
  • Inputting a Calculation Expression Using Standard Format
  • Correcting an Expression
  • Overwrite Input Mode (LineI/LineO or LineI/DecimalO only)
• ▶Inputting an Expression Using Natural Textbook Format
  (MathI/MathO or MathI/DecimalO Only)
  • Natural Textbook Format Input Examples
  • Undo Operations
  • Incorporating a Value into a Function
• ▶Displaying Calculation Results in a Form that Includes
  √2, π, etc. (Irrational Number Form)

Basic Calculations

• ▶Recurring Decimal Calculations
  • Inputting a Recurring Decimal
  • Displaying a Calculation Result as a Recurring Decimal Value
  • Conditions for Displaying a Calculation Result as a Recurring Decimal
  • Recurring Decimal Examples
• ▶Toggling Calculation Results
• ▶Arithmetic Calculations
  • Number of Decimal Places and Number of Significant Digits
  • Omitting a Final Closed Parenthesis
• ▶Fraction Calculations
  • Switching between Improper Fraction and Mixed Fraction Format
• ▶Percent Calculations
• ▶Degree, Minute, Second (Sexagesimal) Calculations
  • Inputting Sexagesimal Values
  • Sexagesimal Calculations
  • Converting Values between Sexagesimal and Decimal
• ▶Multi-Statements
• ▶Using Engineering Notation
• ▶Prime Factorization
• ▶Calculation History and Replay
  • Calculation History
  • Replay
• ▶Using Memory Functions
  • Answer Memory (Ans)
  • Variables (A, B, C, D, E, F, M, x, y)
  • Independent Memory (M)
  • Clearing the Contents of All Memories

Function Calculations

• ▶Pi (π), Natural Logarithm Base e
  • Pi (π)
  • Natural Logarithm Base e
• ▶Trigonometric Functions, Inverse Trigonometric Functions
  • Trigonometric Functions
  • Inverse Trigonometric Functions
• ▶Hyperbolic Functions, Inverse Hyperbolic Functions
  • Hyperbolic Functions
  • Inverse Hyperbolic Functions
• ▶Converting an Input Value to the Calculator’s Default Angle Unit
• ▶Exponential Functions, Logarithmic Functions
  • Exponential Functions
  • Logarithmic Functions
• ▶Power Functions and Power Root Functions
• ▶Rectangular-Polar Coordinate Conversion
  • Converting to Polar Coordinates (Pol)
  • Converting to Rectangular Coordinates (Rec)
  • Rectangular-Polar Coordinate Conversion Examples
• ▶Factorial (!)
• ▶Absolute Value Calculation (Abs)
• ▶Random Number (Ran#), Random Integer (RanInt#)
  • Random Number (Ran#)
  • Random Integer (RanInt#)
• ▶Permutation (nPr) and Combination (nCr)
• ▶Rounding Function (Rnd)

Using Calculation Modes

• ▶Statistical Calculations
  • Inputting Data with Statistics Editor
  • Statistical Calculation Screen
  • Using the Statistical Menu
  • Displaying Statistical Values Based On Input Data
  • Displaying Regression Calculation Results Based On
    Input Data (Paired-Variable Data Only)
  • Single-variable Statistical Calculation Commands
  • Single-variable Statistical Calculation Examples
  • Linear Regression Calculation (y=a+bx) Commands
  • Linear Regression Calculation Examples
  • Quadratic Regression Calculation (y=a+bx+cx2) Commands
  • Quadratic Regression Calculation Examples
  • Logarithmic Regression Calculation (y=a+b･ln(x)) Commands
  • Logarithmic Regression Calculation Examples
  • e Exponential Regression Calculation (y=a･e^(bx)) Commands
  • e Exponential Regression Calculation Examples
  • ab Exponential Regression Calculation (y=a･b^x) Commands
  • ab Exponential Regression Calculation Examples
  • Power Regression Calculation (y=a･x^b) Commands
  • Power Regression Calculation Examples
  • Inverse Regression Calculation (y=a+b/x) Commands
  • Inverse Regression Calculation Examples
• ▶Creating a Number Table
  • Configuring a Number Table Generation Function
• ▶Ratio Calculations
  • Changing the Ratio Expression Type
  • Ratio Mode Calculation Example

Technical Information

• ▶Errors
  • Displaying the Location of an Error
  • Clearing the Error Message
  • Error Messages
• ▶Before Assuming Malfunction of the Calculator...
• ▶Replacing the Battery
• ▶Calculation Priority Sequence
• ▶Stack Limitations
• ▶Calculation Ranges, Number of Digits, and Precision
  • Calculation Range and Precision
  • Function Calculation Input Ranges and Precision
• ▶Specifications

Frequently Asked Questions

• ▶Frequently Asked Questions