If y=(x+sqrt(1+x^2))^n then (1+x^2)(d^...

If `y=(x+sqrt(1+x^2))^n` then `(1+x^2)(d^2y)/(dx^2)+x(dy)/(dx)`

A

`n ^(2)y`

B

`y ^(-n^(2))`

C

`-y`

D

`2x ^(2)y`

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The correct Answer is:

A

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