BCECE Engineering BCECE Engineering Solved Paper-2012

  • question_answer
    The solution of \[\frac{dy}{dx}+\sqrt{\left( \frac{1-{{y}^{2}}}{1-{{x}^{2}}} \right)}=0\]is

    A)  \[{{\tan }^{-1}}x+{{\cot }^{-1}}x=C\]

    B)         \[{{\sin }^{-1}}x+{{\sin }^{-1}}y=C\]

    C)         \[{{\sec }^{-1}}x+\cos e{{c}^{-1}}x=C\]

    D)         None of the above

    Correct Answer: B

    Solution :

    Given, equation is\[\int_{{}}^{{}}{\frac{dy}{\sqrt{1-{{y}^{2}}}}+\int_{{}}^{{}}{\frac{dx}{\sqrt{1-{{x}^{2}}}}}=0}\] On integration, we get\[{{\sin }^{-1}}y+{{\sin }^{-1}}x=C\]


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