If y=(cos x)^((cosx)^cosx...infty), then...

If `y=(cos x)^((cosx)^cosx...infty)`, then dy/dx is equal to

A

`(ytanx)/(ylogcosx-1)`

B

`(y^2tanx)/(ylogcosx-1)`

C

`(ytanx)/(1+ylogcosx)`

D

None of the above

Verified by Experts

The correct Answer is:

B

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