program - finding the roots of the quadratic equation in subset of real numbers

[lsheekan]

Hi all,

i want to write a program in MathCad 15, that can find a roots of the quadratic equation in subset of real numbers. Result will be a vector, or text: "this equation dont have result in real numbers"

I already have a program, that can find a roots:

but i dont know how to continue..

i think, that if b^2-4*a*c <0 than this  equation dont have results in real numbers. but how can i write this in program?

Thanks a lot!

[LucMeekes · Accepted solution]

Does this help?

[lsheekan]

thank you a lot!

[LucMeekes]

You're welcome.

Maybe this helps even more:

Now you get either an error message, or just THE (one) result, or a vector with two results, depending on the value of discr.

Luc