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Inverse and Composite Functions

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Question 62

Given that f(3)=2f(3) = 2f(3)=2, f−1(x)=x+42\displaystyle f^{-1}(x) = \frac{x + 4}{2}f−1(x)=2x+4​ and g(x)=3x+5g(x) = 3x + 5g(x)=3x+5

a.

Find gf(3)gf(3)gf(3)

[2]
b.

Work out an expression for f(x)f(x)f(x)

[2]
c.

Verify that f(−9)=g(−9)f(-9) = g(-9)f(−9)=g(−9)

[2]
Markscheme

Inverse and Composite Functions Questions

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

135 exam-style questions on OCR GCSE Maths Inverse and Composite Functions. Each one has a worked solution and a mark scheme showing where the marks go.

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