1.

If y = sqrt(a^(3x + 1) +sqrt(a^(3x + 1)+ sqrt(a^(3x +1) + ...." to "oo))) then (dy)/(dx) =

Answer»

`(a^(3X + 1)."log a")/((2Y - 1))`
`(3.a^(3x + 1)."log a")/((2y - 1))`
`(3.a^(3x + 1)."log a")/((2y + 1))`
`(a^(3x + 1)."log a")/((2y + 1))`

ANSWER :B


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