And so, with only the real numbers, we can't solve x 2 = 1 . We need the imaginary numbers for this! As you continue to study mathematics, you will begin to see the importance of these …

In this video, I want to introduce you to the number i, which is sometimes called the imaginary, imaginary unit What you're gonna see here, and it might be a little bit difficult, to fully …

Does anyone know what this used for in the real world? If i is an imaginary number, then is it’s purpose just for math itself or do people use to it in the real world today? • Comment on …

Why does this work? You might be wondering how it is that in slope-intercept form, m gives the slope and b gives the y -intercept. Can this be some sort of magic? Well, it certainly is not …

You have all the time you need to learn any math concept at Khan Academy. At Khan Academy, you can slow down and keep working on a concept until you really grasp it and not worry …

Actually, no one really created math. For instance, maybe they used to split food evenly back then. That's division. And maybe someone had berries, and they got some more. That's …

Learn fifth grade math—arithmetic with fractions and decimals, volume, unit conversion, graphing points, and more. This course is aligned with Common Core standards.

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3)Use property of exponents: i^i = e^ (i*i𝛑/2)= e^ (-𝛑/2) i^i = e^ (-𝛑/2) 4) Calculate the value with a calculator: e^-𝛑/2 = approx. 0.207879576. Therefore, i^i IS a real number! If you don't …

Learn eighth grade math—functions, linear equations, geometric transformations, and more. (aligned with Common Core standards)