Multiplying complex numbers graphically example: -1-i | Precalculus | Khan Academy

Sal shows how 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.

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[@traxx75]

Wow, came out today just when yesterday I started learning complex numbers. Thanks Khan Academy :DDD

[@sangbernadin310]

Nice

[@sangbernadin310]

I struggle with this

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Could you please tell me the name of the book including these examples

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[@angelslayer9567]

Can't you just get the point of z and just multiply by (-1 -i), so (0-3i)(-1-i) which will get you to B as well.

[@TROllingNINJA2031]

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[@billzhang575]

Imagine dong all this explaining and you get it wrong