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Inverse and Composite Functions

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Question 7

The function f f\,f is defined such that

f(x)=3x−2 f(x) = 3x - 2 f(x)=3x−2
a.

Find f−1(x)f^{-1}(x)f−1(x)

[2]
b.

The function g g\,g is defined such that g(x)=kx2g(x) = kx^2g(x)=kx2 where k k\,k is a constant. Given that fg(2)=7fg(2) = 7fg(2)=7, work out the value of kkk.

[2]
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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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