Markquill
Start free

CAIE A Level Mathematics 9709 · Functions

Functions: calculation question

4 marksChallenge

The function ff is defined by f(x)=4x−2+1f(x) = \frac{{4}}{{x - 2}} + 1, x≠2x \neq 2.

  1. (a)

    Find f−1(5)f^{-1}(5).

    [4]

Work it out, then check it

Your working is checked step by step against the answer key, with method marks, units and carried-forward errors handled the way a mark scheme handles them.

Answer this and get it marked, free

Free account, no card. Three marked written answers a day on the free plan.

How this question is marked

4 marks. Method marks are awarded for correct working even if the final answer is wrong, and a later part can still score if it correctly uses an earlier wrong answer.

More Functions questions

All Functions questions

Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.