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12th Class Mathematics Sample Paper Maths Olympiad Model Paper-8

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

    A)  \[1\]                            

    B)  \[0\]

    C)  \[-1\]                           

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

    E)  None of these

    Correct Answer: D

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