Multiple Choice Questions on If the curve x 49y sup2 4 28y touches the y axis at a point then find the sum of abscissa ........... for CDS Exam Preparation

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Multiple Choice Questions

If the curve x 49y sup2 4 28y touches the y axis at a point then find the sum of abscissa ...........

Quantitative Aptitude (CDS) Quadratic Equations
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    If the curve x=49y²+4-28y   touches the y -axis at a point then find the sum of abscissa and ordinate at the touching point.

    2/7

    Correct Answer

    1/7

    Incorrect Answer

    7/2

    Incorrect Answer

    2/5

    Incorrect Answer
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    Explanation:

    the curve x=49y²+4-28y   
    x = (7y – 2 )² 
    hence touching point is ( 2/7 , 0)
    sum of abscissa and ordinate at the touching point = 2/7 +0 = 2/7

    By: bhavesh kumar singh
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