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3.2 Algebra and Functions (A-level only)

3.2 Algebra and Functions (A-level only)

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Question 69

The function f f\,f is defined by

f(x)=1x+2\displaystyle f(x) = \frac{1}{x + 2}f(x)=x+21​, x∈Rx \in \mathbb{R}x∈R, x≠−2x \neq -2x=−2

a.

Using set notation, write down the range of fff.

[2]
b.

Find an expression for f−1(x)f^{-1}(x)f−1(x) and, using set notation, state its domain.

[3]
Markscheme

3.2 Algebra and Functions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.2 Algebra and Functions (A-level only)

216 exam-style questions on WJEC A Level Maths 3.2 Algebra and Functions (A-level only), covering 3.2.1 Algebra and Functions (A-level only), 3.2.2 Algebra and Functions (A-level only), 3.2.3 Algebra and Functions (A-level only), 3.2.4 Algebra and Functions (A-level only), 3.2.5 Algebra and Functions (A-level only), 3.2.6 Algebra and Functions (A-level only), and 3.2 Algebra and Functions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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