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Manuals
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Radio Shack Manuals
Calculator
EC-4004
Owner's manual
Radio Shack EC-4004 Owner's Manual
Scientific programmable calculator
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Table Of Contents
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
Your Calculator Overview
The Keys
General Keys
Inverse Key
Mode Key
Memory Keys
Special Keys
Function Keys
Statistical Keys
Programming Keys
Battery
Replacing the Battery
To Turn Your Calculator on
The Display
Addition, Subtraction, Multiplication and Division
Calculations with Parentheses
Negative Numbers
Fractions
Lowest Terms
Reciprocals
Fractions as Division Problems
If You Press the Wrong Key
Overflow or Error Condition
Your Calculator Can Round off Your Answers for You
Scientific Notation
Calculation Range
Digital Notation and Degree-Minute-Second Notation
Rectangular/Polar Coordinate Conversions
Shortcuts
One Variable and One Constant
Constant Memories
Independent Memory
Using the Function Keys
Exponents, Roots and Logarithms
Trigonometric Functions
Percents
Statistical Calculations
Standard Deviations and Arithmetic Means
Regression Analysis
Linear Regression
Logarithmic Regression
Exponential Regression
Power Regression
Programming - Storing Mathematical Procedures
Integrals
True Algebraic Logic
Specifications
Basic Features
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Table of Contents
2
Your Calculator Overview
3
The Keys
4
Programming Keys
5
Battery
6
Replacing the Battery
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