+
Introduction to Imaginary Numbers

Introduction to Imaginary Numbers

Author: Kyle Webb
Description:

Learn about the number i and it's definition(s).  See how to find imaginary roots of negative numbers.

  • Imaginary Numbers introduction
  • Find imaginary roots of negative numbers.
(more)
See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

Introduction to i and Imaginary Numbers

Definitions of Imaginary Numbers

can be defined as:

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

Rewriting Radicals using Complex Numbers

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.

OPTIONAL: Imaginary Roots of Negative Numbers