What are Imaginary Numbers?

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We discuss what imaginary numbers are and how they are part of the larger set of complex numbers in this free math video tutorial by Mario's Math Tutoring. This is a nice introduction to working with i. We also go through some examples.

0:26 A Hierarchy of Different Types of Numbers
1:03 What are Complex Numbers
1:08 What is an Imaginary Number
1:16 Example of Using Imaginary Numbers
2:08 What Does i Represent
3:22 Example 2 Simplifying Square Root of -100

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Awesome video! I was really confused about those, but your video cleared them up really nicely.

amop
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Nice video. But why we need imaginary numbers in the first place. How and where are they used. Can you do a video to explain. Thanks

electrifyingelectron
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Hi, we write it in J in electrical engineering, is it the same? Thanks

walterbaldemor
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I don’t know why I am paying attention to this but have u look at how many veins he have on his arm

gracequ
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So every real number could, in theory, be expressed with 0i?

scruff