If y=a cos ( log x )+ bsin (log x) wher...

If ` y=a cos ( log x )+ bsin (log x) where a ,b are ` parameters ,then ` x^(2) y''+ xy '=`

A

y

B

`-y`

C

2y-1

D

`-2y`

Verified by Experts

The correct Answer is:

B

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