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Functions and Graphs

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Question 170
f−1(x)=3x+1x−2x≥4 f^{-1}(x) = \frac{3x + 1}{x - 2} \quad x \geq 4 f−1(x)=x−23x+1​x≥4
a.

Find f−1f−1(4)f^{-1}f^{-1}(4)f−1f−1(4)

[2]
b.

State the range of f−1f^{-1}f−1.

[1]
c.

Find f(x)f(x)f(x) and state its domain

[3]
Markscheme

Functions and Graphs Questions

  1. A Level
  2. /Maths
  3. /Functions and Graphs

471 exam-style questions on Edexcel A Level Maths Functions and Graphs, covering 2.1 The Modulus Function, 2.2 Functions and Mappings, 2.3 Composite Functions, 2.4 Inverse Functions, 2.5 y=|f(x)| and y=f(|x|), 2.6 Combining Transformations, and 2.7 Solving Modulus Problems. Each one has a worked solution and a mark scheme showing where the marks go.

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