Funtions

Question 1

domain and range

Answer 1

The domain of a function is the set of values which you are allowed to put into the function (so all of the values that x can take).

The range of the function is the set of all values that the function can take, in other words all of the possible values of y when y = f(x).

Question 2

How to write in set notation

x is less than or equal to three where x can be any real number

Answer 2

{x∈R : x ≤ 3}

Question 3

which is not a function
* one to one
* many to one
* one to many

Answer 3

one to many

Question 4

f(x) = 2x can be written as

Answer 4

f:x –> 2x

Question 5

All info on inverse functions

Answer 5

inverse funtion is the opposite of a funtion
reflection of y=x on graph
Domain becomes range and range becomes domain