Q. If $y = 2x^{n+1} + \frac {3}{x^n}$ ,then $x^2 \frac{d^2y}{dx^2}$ is

KCETKCET 2020

A

6n(n+1)y

B

n(n+1)y

C

$x \frac{dy}{dx}+y$

D

$y$

Solution:

Answer (b) n(n+1)y

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