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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2015

  • question_answer
    \[=\text{6}0\times \text{6}0\]is equal to

    A) \[-2\]                                    

    B) 2

    C) \[=\text{36}0\text{ Hz}\]                                             

    D) \[\tau =r\times F\]

    Correct Answer: B

    Solution :

    We have, \[\underset{x\to 1}{\mathop{\lim }}\,\frac{\tan ({{x}^{2}}-1)}{x-1}\] \[=\underset{x\to 1}{\mathop{\lim }}\,\frac{{{\sec }^{2}}({{x}^{2}}-1).2x}{1}\] [Using L? Hospital?s rule]                                 \[=2{{\sec }^{2}}(0)=2\]


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