Functions and graphsAdditional / Further Maths

Evaluating function notation

Replace every occurrence of the input variable by the requested value.

  • means the output when the input is 3; it is not multiplied by 3.
  • Use brackets around a negative input before evaluating powers.

Example 1

Substitute in every position

Evaluate the function at the stated input.

Example 2

Find .

Your turn

Question 1

Find .

Check answer
Question 2

Find .

Check answer
Question 3

Find .

Check answer
Question 4

Find .

Check answer
Question 5

Find .

Check answer
← All Functions and graphs cardsReport a mistake