Multiplying complex numbers (article) | Khan Academy
A complex number is any number that can be written as a + b i , where i is the imaginary unit and a and b are real numbers. When multiplying complex numbers, it's useful to remember that the properties …
Multiplying complex numbers (video) | Khan Academy
Discover how to multiply complex numbers! Just like multiplying regular numbers, you can use the distributive property or FOIL method. Remember, the imaginary unit 'i' squared equals -1. So, when …
Complex numbers | Algebra (all content) | Math | Khan Academy
This topic covers: - Adding, subtracting, multiplying, & dividing complex numbers - Complex plane - Absolute value & angle of complex numbers - Polar coordinates of complex numbers
Multiply complex numbers (practice) | Khan Academy
Given two complex numbers, find their product.
Visualizing complex number multiplication - Khan Academy
One great strength of thinking about complex multiplication in terms of the polar representation of numbers is that it lends itself to visualizing what's going on. What happens if we multiply every point …
Multiply & divide complex numbers in polar form - Khan Academy
Given two complex numbers in polar form, find their product or quotient.
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Multiplying complex numbers graphically example: -3i - Khan Academy
We can multiply complex numbers graphically on the complex plane by rotating and scaling. Multiplying a complex number z by -3i rotates and scales z.
Complex number operations review (article) | Khan Academy
Review complex number addition, subtraction, and multiplication. ... Want to learn more about complex number operations? Check out these videos: Adding complex numbers Subtracting complex …
Multiplying complex numbers graphically example: -1-i
We can multiply complex numbers graphically on the complex plane. We rotate an amount equal to the argument and scale by the modulus of the complex number by which we're multiplying.