Card 1 of 25
For f(x)=x2−3x+2f(x)=x^2-3x+2f(x)=x2−3x+2, what is f(4)f(4)f(4)?
A
f(4)=6f(4)=\boldsymbol{6}f(4)=6
B
- Turning point: (0,0)(0,0)(0,0)
- Axis of symmetry: x=0x=0x=0
C
- ∣a∣>1|a|>1∣a∣>1: narrower
- 0<∣a∣<10<|a|<10<∣a∣<1: wider
D
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.
Card 1 of 25
1.1.3 Algebra and functions Flashcards
25 flashcards on CCEA A Level Maths 1.1.3 Algebra and functions: the key formulae, methods and definitions you need to recall for AS 1, AS 2, A2 1 and A2 2.