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Inverse and Composite Functions

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12
Question 2
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The function f f\,f is such that f(x)=3x−2f(x) = 3x - 2f(x)=3x−2

a.

Find f(5)f(5)f(5)

[2]
b.

The function g g\,g is such that g(x)=2x2−20x+9g(x) = 2x^2 - 20x + 9g(x)=2x2−20x+9 where x≥5 x \geq 5\,x≥5

Express the inverse function g−1g^{-1}g−1 in the form g−1(x)=…g^{-1}(x) = \dotsg−1(x)=…

[4]

Inverse and Composite Functions Questions

  1. IGCSE
  2. /Maths
  3. /Inverse and Composite Functions

Practise Oxford AQA IGCSE Maths Inverse and Composite Functions with exam-style questions for Core and Extended tier. 4 questions, matched to the Oxford AQA IGCSE Maths (9260) specification and written in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank