"If " int(cos 4x+1)/(cotx-tanx)dx=Acos4x...

`"If " int(cos 4x+1)/(cotx-tanx)dx=Acos4x+B, " then "`

`A= -(1)/(8)`

`B=(1)/(2)`

`f(x)` has fundamental period `(pi)/(2)`

`f(x)` is an odd function

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The correct Answer is:

A, C

`int(cos^(2)2xsin 2x dx)/(cos 2x)=(1)/(2) int sin 4x dx= -(1)/(8)cos 4x+B`

int(dx)/(sqrt(2e^(x)-1))=
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