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Let the function y = f(x) be given by ...

Let the function y = f(x) be given by
` x= t^(5) -5t^(3) -20t +7`
` and y= 4t^(3) -3t^(2) -18t + 3`
where ` t in ( -2,2) ` then f'(x) at t = 1 is

A

` 5/2 `

B

`2/5`

C

`7/5`

D

`5/7`

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE-CONTINUITY AND DIFFERENTIABILITY-Assignment ( section -A)
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  13. If y="log"(2)"log"(2)(x), then (dy)/(dx) is equal to

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  14. if f'(x)=sqrt(2x^2-1) and y=f(x^2) then (dy)/(dx) at x=1 is:

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