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Let y=sqrt(x+sqrt(x+sqrt(x+...oo)))," th...

Let `y=sqrt(x+sqrt(x+sqrt(x+...oo)))," then "(dy)/(dx)` is equal to

A

`(2y)/(cos x)`

B

`(cos x)/(2y-1)`

C

`(2y-1)/(2y+1)`

D

`(cosx)/(2y+1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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