let y=sqrt(x+sqrt(x+sqrtx...oo))) then d...

let `y=sqrt(x+sqrt(x+sqrtx...oo)))` then `dy//dx` equals

A

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

B

`(x)/(x+2y)`

C

`(1)/(sqrt(1-4x))`

D

`(y)/(2x+y)`

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The correct Answer is:

A, D

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