if y=a sin (log x) + b cos (log x ) , th...

if `y=a sin (log x) + b cos (log x )` , then the differential equation
without the parameter a and b is

A

(a) `(d^2y)/(dx^2)+x(dy)/(dx)+x^2y=0`

B

(b) `x^2(d^2y)/(dx^2)-x(dy)/(dx)+y=0`

C

(c) `x^2(d^2y)/(dx^2)+x(dy)/(dx)+y=0`

D

(d) `x^2(d^2y)/(dx^2)-x(dy)/(dx)-y=0`

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The correct Answer is:

C

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