- #26

gabbagabbahey

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Are we all integrating [tex]

\int -4(sin\theta)^2 + (2cos\theta)^4

[/tex] from 0 to 2pi?

[tex]\int_0^{2\pi}\sin^n\theta d\theta=\int_0^{2\pi}\cos^n\theta d\theta=0[/tex]

is only true for odd [itex]n[/itex]....Perhaps this is the source of your error?