1.

If sqrt(y - sqrt(y - sqrt(y ....oo))) = sqrt(x + sqrt(x + sqrt(x ....oo))) then (dy)/(dx) is equalto

Answer»

`(y - X + 1)/(y - x - 1)`
`(y - x)/(y + x)`
`(x + y + 1)/(y - x)`
`(y - x + 1)/(y + x)`

ANSWER :A


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