U8 L6 Complex numbers day 1.notebook
Unit 8 Lesson 6
Complex Numbers
Definition of the Imaginary Unit
&
U8 L6 Complex numbers day 1.notebook
Set of All Real #s
Real ImaginaryComplex,10, ‐8,
For any real number b,
To simplify, 1st write negative radicals in terms of i
1. 2. 3. 4.example √36 √16 i=6i
U8 L6 Complex numbers day 1.notebook
c)
1stWrite negative radicals in terms of i.2ndUse the product rule to multiply.
1stWrite negative radicals in terms of i.2ndDivide coefficients and radicals
c)
U8 L6 Complex numbers day 1.notebook
A complex number is a combo of real and imaginary #'s and will be written in the form a + bi, where a and b are real numbers and i is the imaginary unit.
examples: a) 5+2i b) -4 - 2i c) 6i
U8 L6 Complex numbers day 1.notebook
Subtract the real part, subtract the imaginary part.
Can you find the i button on your calculator??
WITHOUT CALCULATOR!
d) (4+3i)2
e) (5+2i)(52i) f) (2i)(7i)
U8 L6 Complex numbers day 1.notebook
Homework
U8 L6 Worksheet