Hi everyone,

I am studying discrete Fourier transform, i dont know how to input this into my calculator, im using Casio570ES.

$\displaystyle e^{-i2\pi}$, the answer is 1.

$\displaystyle e^{-i\frac{3\pi}{2}}$, im suppose to get i

can someone help me, thank you in advance for all your help & support,really appreciate.