Multiple Choice Questions on calculate the value of lambda for which an equation x sup2 lambda 2x 3 15 0 has both roots........... for CDS Exam Preparation

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Multiple Choice Questions

calculate the value of lambda for which an equation x sup2 lambda 2x 3 15 0 has both roots...........

Quantitative Aptitude (CDS) Quadratic Equations
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    calculate the value of λ for which an equation x²-λ( 2x- 3)- 15=0   has both roots of opposite sign

    λ > 3

    Incorrect Answer

    λ < 5

    Correct Answer

    λ > 5 

    Incorrect Answer

    λ < -1

    Incorrect Answer
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    Explanation:

    the given equation is x^2-λ( 2x- 3)- 15=0
    x²-2λx+3λ- 15=0   
    Condition for roots of opposite sign αβ<0
    Hence , 3λ- 15<0
    λ < 5

    By: bhavesh kumar singh
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