1. Complex Numbers

2. Objectives
Perform operations on complex numbers.

3. Imaginary Numbers Imaginary Unit, i : Imaginary Numbers :
If r > 0, then the imaginary is defined as follows:

4. Complex Numbers
A complex number is any number that can be written as a + bi, where a and b are real numbers; a is called the real part and b is called the imaginary part.

5. Simplify

6. Simplify

7. Simplify

8. Simplify

9. Conjugate of a Complex Number
The conjugate of a complex number a + bi is
a – bi.

10. Write the conjugate of each complex number.
i – 2i

11. Simplify

12. Simplify

13. Simplify

14. Homework
Worksheet