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If x=t^3+t+5 & y=sint then (d^2y)/(dx^2)...

If `x=t^3+t+5` & `y=sint` then `(d^2y)/(dx^2)=` `(a)` `-((3t^2+1)sint+6tcost)/((3t^2+1)^3)` (b) `((3t^2+1)sint+6tcost)/((3t^2+1)^3)` `(c)` `-((3t^2+1)sint+6tcost)/((3t^2+1)^2)` (d) `(cost)/(3t^2+1)`

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