JEE Main & Advanced Mathematics Functions Question Bank Limits

  • question_answer
    \[\underset{x\to 0}{\mathop{\lim }}\,{{x}^{x}}=\]  [Roorkee 1990]

    A)                 0

    B)                 1

    C)                 e

    D)                 None of these

    Correct Answer: B

    Solution :

                       Let \[y={{x}^{x}}\,\Rightarrow \,\,\,\log y=x\log x\] \[\therefore \,\,\underset{y\to 0}{\mathop{\lim }}\,\,\log y=\underset{x\to 0}{\mathop{\lim }}\,x\log x\]\[=0=\log 1\,\,\Rightarrow \,\,\underset{x\to 0}{\mathop{\lim }}\,{{x}^{x}}=1\].


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