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If int (sin^(8)x-cos^(8)x)/(1-2sin^(2)co...

If `int (sin^(8)x-cos^(8)x)/(1-2sin^(2)cos^(2)x)dx=A sin 2x+B,` then A=

A

`-1/2`

B

`-1`

C

`1/2`

D

1

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The correct Answer is:
A
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  11. If int(e^(x))(1-sinx)/(1-cosx)dx=f(x) constant, then f(x) is equal to

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  12. If I(n)= intx^(n) e^(cx) dx for n ge 1, then c, I(n) + nI(n-1) is equa...

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