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d/dx {(cosx + sinx)/(cos x - sin x)} =...

`d/dx {(cosx + sinx)/(cos x - sin x)} =`

A

1/(cosx-sinx)

B

2/(cosx-sinx)

C

2/(1-sin2x)

D

2/(1-cos2x)

Text Solution

Verified by Experts

The correct Answer is:
C
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