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1.2.5 Discriminant of a quadratic

Card 1 of 21

What happens to ax2+bx+cax^2+bx+cax2+bx+c when a=0a=0a=0?

A

a≠0a\neq0a=0; otherwise the x2x^2x2 term disappears and the function becomes linear.

B

When Δ<0\Delta<0Δ<0, the graph does not meet the xxx-axis.

C

No real roots, because Δ\sqrt{\Delta}Δ​ is not real.

D

The xxx-coordinates where the graph meets the xxx-axis.

Card 1 of 21

1.2.5 Discriminant of a quadratic Flashcards

  1. A Level
  2. /Maths
  3. /1.2.5 Discriminant of a quadratic

21 flashcards on OCR (MEI) A Level Maths 1.2.5 Discriminant of a quadratic: the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.

Flashcards