Sunday, 9 April 2017

exponentiation - Complex numbers, finding smallest exponent

z=3i1+3i


I need to find smallest exponent n>2018, such as zn will be a number with real part equal to 0 and imaginary part of number will be negative.

I calculated that z=i but I don't know how to write a equation that covers all conditions.
It doesn't have to be an exact answer, I am asking more about how do I solve this kind of a problem effectively

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