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Card 1 of 25

A quadratic function has form [...]\text{[...]}[...], where a≠0a\neq 0a=0.

A

For ax2+bx+c=0ax^2+bx+c=0ax2+bx+c=0, the quadratic formula is x=−b±b2−4ac2ax=\frac{-b\pm\sqrt{b^2-4ac}}{2a}x=2a−b±b2−4ac​​, and the discriminant is Δ=b2−4ac\boxed{\Delta=b^2-4ac}Δ=b2−4ac​.

B

The vertex has xxx-coordinate −3-3−3.

C

3(x+2)2−193(x+2)^2-193(x+2)2−19

D

A quadratic function has form f(x)=ax2+bx+c\boxed{f(x)=ax^2+bx+c}f(x)=ax2+bx+c​, where a≠0a\neq 0a=0.

Card 1 of 25

1.5.3 Quadratic functions Flashcards

  1. A Level
  2. /Maths
  3. /1.5.3 Quadratic functions

25 flashcards on AQA A Level Maths 1.5.3 Quadratic functions: the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.

Flashcards