Functions

Question 1

Function

Answer 1

f(x) where f is the function and x is the domain - it releases outputs - the range

Question 2

Defining suitable domains

Answer 2

Cannot divide by 0 so denominator ≠0
Also a root cannot be <0
When writing state
For example 
{xER: x ≠5}

Question 3

Identifying range

Answer 3

All the possible outputs, take into consideration the suitable domains
Stated as for example f(x)> or equal to 9