# Complex Numbers

Reference > Mathematics > AlgebraImaginary Numbers - A brief introduction to the concepts behind imaginary numbers

Complex Numbers - combining real numbers with imaginary numbers to create complex numbers

How to tell if two complex numbers are equal, by comparing real and imaginary parts

How to multiply complex numbers, how to divide and simplify complex numbers

Graphing complex numbers on the complex plane, and calculating its magnitude

# Understanding Coronavirus Spread

A Question and Answer session with Professor Puzzler about the math behind infection spread.

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