Complex Numbers

By M Bourne


How Complex can Numbers Get?

fractal image
Fractals are created by taking iterations of complex numbers.
See more at: Fractals.

Just when you thought you understood numbers, we now meet complex numbers.

What are they? What are they good for? Read on ...

You are designing a simple AC circuit and you need to know the voltage across different parts of the circuit.

math expression

Say that you want to know what AC voltage to apply to the circuit, given that the current in the circuit needs to be 10 A. How do you do it? What do you need to know?

To solve this problem, you need to know about COMPLEX NUMBERS. When you finish studying this section, you will know a lot about Complex Numbers and their applications. Enjoy ...!

Before we start, check out the following background stuff...

Background Knowledge For Complex Numbers

Before trying to study complex numbers, you should make sure that you understand and remember:

  • Radicals (also called surds), especially

Addition and Subtraction and
Multiplication and Division

Helpful Vocabulary

For a complete list of vocabulary in this section (this includes words you have met already and new words that you will learn in this section), go to:

Complex Numbers Vocabulary.

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