4.9 (176) In stock
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
Learn about the imaginary unit, "i", a unique number defined as the square root of -1. It's a key part of complex numbers, which are in the form a + bi. The powers of "i" cycle through a set of values.
Introduction to complex numbers, Imaginary and complex numbers, Precalculus
Imaginary Numbers (Definition, Rules, Operations, & Examples)
Multiplicative Inverse for Complex Numbers, Property & Examples - Video
How to find the square root of -61 - Quora
What is the square root of -25? - Quora
Imaginary Numbers, Definition, History & Examples - Video
What is the answer to -5 squared? - Quora
What is the square root of -144? - Quora
Intro to complex numbers (video)
