- quadratic-solutions a b cprocedure
a : number b : number c : number
Returns a list of all real solutions to the equation a x^2 + bx + c = 0 with real coefficients.
> (quadratic-solutions 1 0 -1) '(-1 1) > (quadratic-solutions 1 2 1) '(-1) > (quadratic-solutions 1 0 1) '()