- #26

gabbagabbahey

Homework Helper

Gold Member

- 5,002

- 6

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

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

[/tex] from 0 to 2pi?

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