What is discriminant in mathematics ? What is the formula of discriminant ?
Discriminant is a parameter that is used to determine the existence of roots of a discriminant 2nd order equation and their numerical equivalents. It depends on the coefficients of the discriminant equation. It is denoted by the Greek letter delta. If the discriminant value is greater than 0, this equation has two real roots, but these roots are different from each other. If the dicriminant value is equal to 0, this equation has coincident roots. So the roots are equal to each other. If the discriminant value is less than 0, this equation has no real roots. In this case, we can say that the equation has complex roots.
It is found by the formula discriminant = b2 - 4ac in a second order equation of a.x.x + b.x + c = 0.