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]

If \[f(x)=\sin \log x\], then the value of \[f(xy)+f\left( \frac{x}{y}

1.	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.	\[\sin \log x.\cos \log y\]
Answer» C. ?1

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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]

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