Complex numbers | Mathematics | Page 1

boreal flame Sep 17, 2024, 2:03 PM

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topaz boneBOT Sep 17, 2024, 2:03 PM

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urban cipher Sep 17, 2024, 2:04 PM

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@flat trail

final elm Sep 17, 2024, 2:17 PM

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easy to see that z=exp(i * pi/30). Or exp(-i * pi/30). So, substitute it into second expression.

flat trail Sep 19, 2024, 3:32 PM

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if z +1/z is real

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then mod z is 1

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then just do the rest

flat trail Sep 19, 2024, 3:37 PM

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is it 0?

#Complex numbers