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Math Help - use roots of quadratic equation

  1. #1
    Newbie angusmdmclean's Avatar
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    use roots of quadratic equation

    I have the equation x*x +(K12+K21+K10)x +K21*K10=0. THis is a quadratic equation of the general description. ax^2 +bX + c=0

    I have a program, which has solved for the roots of thisquadratic equation. From the values of the roots can I solve for K12, K21 and K10?


    Angus
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  2. #2
    Member kalyanram's Avatar
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    Re: use roots of quadratic equation

    Quote Originally Posted by angusmdmclean View Post
    I have the equation x*x +(K12+K21+K10)x +K21*K10=0. THis is a quadratic equation of the general description. ax^2 +bX + c=0

    I have a program, which has solved for the roots of thisquadratic equation. From the values of the roots can I solve for K12, K21 and K10?


    Angus
    You have K_{12}+K_{21}+K_{10} = -(\alpha+\beta); K_{21}.K_{10} = \alpha.\beta you have two equations in three unknowns this cannot be solved uniquely.
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