# really dumb question

• May 3rd 2010, 08:34 PM
Pengu
really dumb question
hey im really dumb,
but is
$(e^{i \pi/4})^ 4$
=
$e^{i \pi}$
because
$(e^{i \pi/4})^ 4 = e^{4 i \pi/4}$ ?
• May 3rd 2010, 08:39 PM
surjective
Good question
Hello,

Congratulations. You have found a fourth root of -1 ( $-1=e^{i\pi}$). How many others can you find?