Card 1 of 20
If x=αx=\alphax=α is a root of f(x)=0f(x)=0f(x)=0, what must be true?
A
If fff is continuous on [a,b][a,b][a,b] and f(a)f(b)<0\boxed{f(a)f(b)<0}f(a)f(b)<0, then f(x)=0f(x)=0f(x)=0 has at least one root in a<x<ba<x<ba<x<b.
B
The curve may touch the xxx-axis and turn around.
C
The curve is above the xxx-axis.
D
f(α)=0f(\alpha)=0f(α)=0.
Card 1 of 20
3.7.1 Numerical methods (A-level only) Flashcards
20 flashcards on CCEA A Level Maths 3.7.1 Numerical methods (A-level only): the key formulae, methods and definitions you need to recall for AS 1, AS 2, A2 1 and A2 2.