Absolute Value of Complex Function to a Power

Question

For complex valued function $x(n)$, is $|x(n)|^{2} = x(n)^{2}$?

If my answer is not clear, please tell me. – Jan May 15 '20 at 18:45 — Jan, May 15 '20 at 18:45

score 2 · Answer 1 · answered May 13 '20 at 15:57

2

Not in general, take $x(n) \equiv \mathrm i$. Then $\lvert x(n) \rvert^2 = 1$, but $x(n)^2 = -1$.

answered May 13 '20 at 15:57

Jan

1 Answers1