1. ## 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

2. ## Re: use roots of quadratic equation

Originally Posted by angusmdmclean
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.