Complex Numbers

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Complex Numbers

• Any number in form abi, where a and b are real
  numbers and i is imaginary.

What is an imaginary number?
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Definition of imaginary numbers
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When adding or subtracting complex numbers,
combine like terms.
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Multiplying complex numbers.
To multiply complex numbers, you use the same
procedure as multiplying polynomials.
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Conjugates
In order to simplify a fractional complex number,
use a conjugate.
What is a conjugate?
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Complex Conjugates

• The conjugate of a complex number has the same
  real part but opposite imaginary part. Ex. 2 3i
  and 2 3i
• When complex conjugates are added or multiplied
  the result will have an imaginary part of 0i