question_answer

If \[f(x)=\sin \log x\], then the value of \[f(xy)+f\left( \frac{x}{y} \right)-2f(x).\cos \log y\] is equal to     [Orissa JEE 2004]

A)            1

B)            0

C)            ?1

D)            \[\sin \log x.\cos \log y\]