Multiple Choice Questions on If f x x2 1 x2 then find the value of f sin y ........ for NDA Exam Preparation

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Multiple Choice Questions

If f x x2 1 x2 then find the value of f sin y ........

Mathematics (NDA) Set theory
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    If f(x) = x2 /(1-x2) , then find the value of f(sin y ) ?

     tan2(y) 

    Correct Answer

     tan y 

    Incorrect Answer

     cos y 

    Incorrect Answer

     sin y 

    Incorrect Answer
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    Explanation:

     f(x) = x2 / ( 1-x2) 

     f(sin y ) = sin2( y) /(1- sin2( y)) 

     = sin2( y) / cos2( y) 

     = tan2(y) 

    By: bhavesh kumar singh
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