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12th Class Mathematics Sample Paper Maths Olympiad Model Paper-5

  • question_answer
    The derivative of \[{{\sin }^{-1}}\left( \frac{2x}{1+{{x}^{2}}} \right)\] w.r.t. \[co{{s}^{-1}}\left( \frac{1-{{x}^{2}}}{1+{{x}^{2}}} \right)\]  is

    A)  \[-1\]                           

    B)  1

    C)  2                                

    D)  4

    E)  None of these

    Correct Answer: B

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