Pure Year 1 Unit 2 Flashcards
1
Q
quadratic formula
A
x = (-b +- root(b^2 - 4ac)) / 2a
2
Q
What is the domain
A
The set of possible inputs for a function
3
Q
What is the range
A
The set of possible outputs for a function
4
Q
What are the roots of a function?
A
the values of x for which f(x) = 0
5
Q
if the completed square was:
f(x) = (x+p)^2 + q
what would the turning point be?
A
(-p, q)
6
Q
What is the discriminant?
A
b^2 - 4ac
7
Q
How many roots does b^2 - 4ac > 0 have?
A
two distinct real roots
8
Q
How many roots does b^2 - 4ac = 0 have?
A
One repeated root
9
Q
How many roots does b^2 - 4ac < 0 have?
A
no real roots
