let y=t^(10)+1, and x=t^8+1, then (d^2y)...

let `y=t^(10)+1,` and `x=t^8+1,` then `(d^2y)/(dx^2)` is

A

`5/2 t`

B

`20t^(8)`

C

`5/(16t^(6))`

D

`(5t^(6))/16`

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The correct Answer is:

C

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