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

  • question_answer
    If \[{{e}^{x}}=y+\sqrt{1+{{y}^{2}}},\] then y =

    A)  \[\frac{{{e}^{x}}+{{e}^{-x}}}{2}\]             

    B)  \[\frac{{{e}^{x}}-{{e}^{-x}}}{2}\]

    C)  \[{{e}^{x}}+{{e}^{-x}}\]                

    D)  \[{{e}^{x}}-{{e}^{-x}}\]

    E)  None of these

    Correct Answer: B

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