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Introduction to Imaginary Numbers

Author: Kyle Webb

Introduction to i and Imaginary Numbers

Source: https://www.khanacademy.org/

Definitions of Imaginary Numbers

i can be defined as:

$i squared equals negative 1$ or $square root of negative 1 end root equals i$

Rewriting Radicals using Complex Numbers

Source: http://patrickjmt.com/

What's the point of Imaginary Numbers?

We use i for imaginary numbers. Although, "j" is also used as an imaginary number in this video.

Source: http://www.sixtysymbols.com/

OPTIONAL: Imaginary Roots of Negative Numbers

Source: https://www.khanacademy.org/