Multiple Choice Questions on The minimum value of function y x2 in the interval 1 5 is ........ for NDA Exam Preparation

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Multiple Choice Questions

The minimum value of function y x2 in the interval 1 5 is ........

Mathematics (NDA) Diffrentiation
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    The minimum value of function y=x2 in the interval [1,5]  is?

    5

    Incorrect Answer

    10

    Incorrect Answer

    15

    Incorrect Answer

    25

    Correct Answer
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    Explanation:

    y=x2

    dy/dx  =2x

    dy2/dx2   =2  (positive)

    Hence ,decreasing function

    dy/dx  =0

    x=0

    minima at x=0

    f(1) =1

    f(5)=25

    minimum value

     

    By: bhavesh kumar singh
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