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If f (x) = sin (log x) then the value o...

If `f (x) = sin (log x) ` then the value of `f(xy)+f((x)/(y))-2f (x) cos (log y)` is-

A

`2f(x) f(y)`

B

`-1`

C

1

D

0

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The correct Answer is:
D
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