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A quadratic function has the form [ ].
A
For roots x=px=px=p and x=qx=qx=q, the axis of symmetry is x=p+q2\boxed{x=\frac{p+q}{2}}x=2p+q.
B
It opens upwards.
C
A quadratic function has the form f(x)=ax2+bx+cf(x)=ax^2+bx+cf(x)=ax2+bx+c, where a≠0a\neq 0a=0.
D
A maximum point.
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1.2.4 Quadratic functions Flashcards
23 flashcards on OCR A Level Maths 1.2.4 Quadratic functions: the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.