∫(cos2x+1/sin4x )²

can any one help me with this step by step solution cause i have fill 2 papers of failed attempts(Headbang)

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- December 30th 2008, 08:51 PMmohamedsafyhelp bad integration problem
∫(cos2x+1/sin4x )²

can any one help me with this step by step solution cause i have fill 2 papers of failed attempts(Headbang) - December 30th 2008, 09:01 PMChop Suey
Is it

or

- December 30th 2008, 09:57 PMmohamedsafy
it is the second one

∫(cos2x+(1/sin4x) )² - December 30th 2008, 10:04 PMChop Suey
Expand to get:

Use the identity and the first integral becomes trivial.

Use the identity and the second integral becomes trivial.

The third is trivial as it is.