Tutorial Q43 -- Unit disc and unit circle relation to complex arithmetic

Описание к видео Tutorial Q43 -- Unit disc and unit circle relation to complex arithmetic

I briefly explain what is unit disc and unit circle on the complex plain and discuss relation of these sets to the arithmetic of complex numbers. That is, I show which of these two sets is closed under addition, multiplication, taking negative and taking inverse.

This video is part of Mathematics 1251 http://web.maths.unsw.edu.au/~potapov...

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