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Complex numbers written in exponential form.

Name: Anonymous 2007-11-29 16:47

z^4 = 81*e^(Pi/2)i

I have no idea how to find the roots for this equation. Can someone talk me through the algebra?

Name: Anonymous 2007-11-30 2:59

>>1
It is a mathematical rule that:
e^(xi) = cos(x) + i*sin(x)

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