Pure Year 1 Unit 2 Flashcards Preview

Edexcel A Level Maths > Pure Year 1 Unit 2 > Flashcards

Flashcards in Pure Year 1 Unit 2 Deck (9)
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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