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RAJASTHAN ­ PET Rajasthan PET Solved Paper-2005

  • question_answer
    If\[y=\log |x|\]and\[x\ne 0,\]then\[\frac{dy}{dx}\]is equal to

    A)  \[\frac{1}{x}\]

    B)  \[-\frac{1}{x}\]

    C)  \[\frac{1}{|x|}\]              

    D)  None of these

    Correct Answer: A

    Solution :

     \[y=\log |x|\] \[\frac{dy}{dx}=\frac{1}{|x|}.\frac{|x|}{x}=\frac{1}{x}\]


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