Math miscellaneousHard

Question

dx is equal to

Options

A.
B.
C.
D.

Solution


= (cosx)-2005 .-cotx - (∫2005)(cosx)-2006 . - sin x(-cot x) dx - 2005∫cos-2005x dx
= + 2005 ∫cos-2005x dx - 2005 ∫cos-2005 x
= + C

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