I can't follow a proof in my physics class. It involves this:

I am suppose to get 2pi for n=-1 and 0 otherwise.

I got:

Using euler's formula I got:

Pluging in the limits I only got 0 regardless of what n is.

What am I missing?

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- September 5th 2009, 12:05 PMsynclastica_86Can't evaluate this integral
I can't follow a proof in my physics class. It involves this:

I am suppose to get 2pi for n=-1 and 0 otherwise.

I got:

Using euler's formula I got:

Pluging in the limits I only got 0 regardless of what n is.

What am I missing? - September 5th 2009, 12:12 PMSampras
For n = -1, the integral is .

- September 5th 2009, 12:27 PMsynclastica_86
OMG........thank.... I spent so long working blind....... I was trying to plug in n after I do the work.