'e' is an imaginary number, multiplied by anything gives an imaginary result
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Not necessarily. i times pi is not a whole number, and yet e to the power of i times pi is equal to -1.
The answer depends on what the question is!
i (taken to be sqrt(-1) for this question) requires that you know a bit about writing complex numbers. i = e^(i*pi/2) so i^i = (e^(i*pi/2))^i which equals e^(i*i*pi/2) since i*i = -1 we get e^(-pi/2) so i^i = e^(-pi/2) which is roughly .207879576
-1. It is a version of Euler's formula.
by euler: i=ei(pi)/2 therifore ii = (ei(pi)/2)i=ei^2(pi)/2=e-(pi)/2 ~0.208