fx-83GT CW I fx-85GT CW
Before Using the Calculator
- ▶Read This First
- ▶Initializing the Calculator
- ▶Calculator "Get Started" Screen
- ▶Precautions
- ▶Getting Started
Calculator Apps and Menus
Inputting Expressions and Values
- ▶Basic Input Rules
- ▶Inputting an Expression Using Natural Textbook Format (MathI/MathO or MathI/DecimalO Only)
- ▶Overwrite Input Mode (LineI/LineO or LineI/DecimalO Only)
Basic Calculations
- ▶Arithmetic Calculations
- ▶Fraction Calculations
- ▶Powers, Power Roots, and Reciprocals
- ▶Pi, Natural Logarithm Base e
- ▶Calculation History and Replay
- ▶Using Memory Functions
Changing Calculation Result Format
- ▶Using the FORMAT Menu
- ▶Standard and Decimal Conversion
- ▶Prime Factorization
- ▶Recurring Decimal Conversion (Recurring Decimal Calculations)
- ▶Improper Fraction and Mixed Fraction Conversion
- ▶Engineering Notation
- ▶Sexagesimal Conversion (Degree, Minute, Second Calculations)
Advanced Calculations
- ▶Function Analysis
- ▶Probability
- ▶Numeric Calculations
- ▶Angle Unit, Polar/Rectangular Coordinate, Sexagesimal
- ▶Hyperbolic, Trigonometric
- ▶Others
Registering and Using Defining Equations for f(x) and g(x)
Using QR Code Functions
Using Calculator Apps
Technical Information
- ▶Errors
- ▶Before Assuming Malfunction of the Calculator...
- ▶Replacing the Battery
- ▶Calculation Priority Sequence
- ▶Calculation Ranges, Number of Digits, and Precision
- ▶Specifications
Frequently Asked Questions
Powers, Power Roots, and Reciprocals
Use the keys below to input power functions, power root functions, and reciprocal function.
Power functions:
(square),
(nth power)
Power root functions:
(square root), 
(
) (nth root)
Reciprocal function: 
(
)
Example 1: (52)3 = 15625
5

3

Example 2: (1 + 1)2+2 = 16
1
1
2
2

Example 3: √2 × 3 = 3√2 = 4.242640687...
(Input/Output: MathI/MathO)
2
3

(Input/Output: LineI/LineO)
2
3

Example 4: 5√32 = 2
(Input/Output: MathI/MathO)

(
) 5
32

(Input/Output: LineI/LineO)
- 5

(
) 32


Example 5: 10-1 = 110
(Input/Output: MathI/MathO)
- 10

(
)

Key (Power of 10)
Pressing the
key is the same as pressing 


. Both operations input "×10
" (MathI/MathO or MathI/DecimalO) or "×10^(" (LineI/LineO or LineI/DecimalO).
Example: 1.23 × 103 = 1230
- 1
23
3

√ Form Calculation Range
The allowable display ranges of the √ form calculation result are shown below.
± a√b, ± d ± a√b, ± a√bc ± d√ef
1 ≤ a < 100, 1 < b < 1000, 1 ≤ c < 100
0 ≤ d < 100, 0 ≤ e < 1000, 1 ≤ f < 100
Example:
10√2 + 15 × 3√3 = 45√3 + 10√2 ... Displayed in √ form
99√999 (= 297√111) = 3129.089165 ... Displayed as a decimal value

Key and 