Pure sector 3:Functions

Question 1

Domain

Answer 1

set of all possible inputs mapping or function
X values

Question 2

Range

Answer 2

set of all possible outputs of a particular set of inputs for a mapping or function
Y values

Question 3

What does [ ] mean in interval notation

Answer 3

Included

Question 4

What does ( ) mean in interval notation

Answer 4

Not included

Question 5

Mapping definition

Answer 5

A rule which maps one set of numbers to another

Question 6

Function definition

Answer 6

A mapping such that every element of the domain is mapped to exactly one element in the range

Question 7

One to one function description

Answer 7

Each input has one output

Question 8

Does a many ti one function have a inverse function

Answer 8

No

Question 9

Many to one function description

Answer 9

Multiple inputs can map to the same out put

Question 10

Is one to many mapping a function

Answer 10

No

Question 11

One to many mapping description

Answer 11

Each input has multiple outputs

Question 12

Composite function

Answer 12

Can apply multiple functions in succession to an input
fg(x)

Question 13

Which functions have an inverse function

Answer 13

Only one to one

Question 14

Inverse function method

Answer 14

Write y=f(x)
Rearrange the equation to make x the new subject
Swap x and y over
Y=f-1(x)