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If 2x=y^(1/5)+y^(-1/5) then (x^2-1)(d^2y...

If `2x=y^(1/5)+y^(-1/5)` then `(x^2-1)(d^2y)/dx^2+xdy/dx=ky` , then find the value of k.

A

-25

B

25

C

16

D

-16

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The correct Answer is:
B
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