16. 16
Jun 103:10 p.m.
The quantity is called the
discriminant of the quadratic equation.
Δ > 0 ⇒
Δ = 0 ⇒
Δ < 0 ⇒
the equation has two real roots.
the equation has a repeated root.
the equation has no real roots.
qformula.wma
17. 17
Jun 103:11 p.m.
Δ > 0 Δ = 0
Δ < 0
Two different real roots
One repeated root
(or two equal roots)
No root.