Definite integral

\int_{0}^{\pi }{}e^{cos^{2}x}cos^{3}(2n+1)xdx = ? where n is an integer.

I took cos³(2n+1) as a constant. I can't evaluate the remaining integral.Help needed

2 Answers

First of all , the " x " is in the argument of " cos " . Secondly , replace " x " with " Ï€ - x " , to get that the given integral is zero .

ohh... thats stupid of me...but then i m not happy with the way it is written..

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