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If y = ax^( n + 1) + bx ^(-n) , " then ...

If ` y = ax^( n + 1) + bx ^(-n) , " then " x^(2) ( d^(2) y)/( dx^(2))` is equal to a)n ( n - 1) y b)n ( n + 1) y c)ny d) `n^(2) y `

A

n ( n - 1) y

B

n ( n + 1) y

C

ny

D

`n^(2) y `

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The correct Answer is:
B
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