## Beskrivning

## eMath 1: Functions and equations

- 300-400 assignments + answers, in three levels of complexity
- Numerous example solutions
- Possibility to add comments and highlight text
- Possibility to check the correctness of the calculation

**Overview:** This book is a repetition of middle school math, with some topics being treated more carefully than before. It gives an overview of the basic number domains and their operation, shows how to solve first degree equations, how to work with percentages, roots and powers, and finally explains the important notion of a function.

### Table of contents:

**1 Preface**

**2 Numbers and Arithmetic Operations**

2.1 Sets of Numbers

2.2 Additive Inverse and Multiplicative Inverse

2.3 Rules of Arithmetic

2.4 Absolute Values

**3 Equations**

3.1 The Concept of an Equation

3.2 Solving an Equation

3.3 Word Problems

3.4 Infinite Periodic Decimal Numbers

**4 Percentage**

**5 Powers**

5.1 Powers

5.2 Powers of Ten

**6 Roots**

6.1 Square Roots

6.2 General Roots

6.3 Rational Powers

**7 Functions**

7.1 General Functions

7.2 The Graph of a Function

7.3 Power Functions

7.4 Exponential Functions

7.5 Direct Proportionality

7.6 Inverse Proportionality