Question

The below picture are few natural examples of parabolic shape which is represented by a quadratic polynomial. A parabolic arch is an arch in the shape of a parabola. In structures, their curve represents an efficient method of load, and so can be found in bridges and in architecture in a variety of forms.

If the roots of the quadratic polynomial are equal, where the discriminant D = d² – 4ac, then:

Options

• D > 0

• D < 0

• D ≥ 0

• D = 0

Answer 1

D = 0