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3.2 Algebra and Functions (A-level only)

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Question 56

Each of the following functions has domain x∈Rx \in \mathbb{R}x∈R.

Which function does not have an inverse function?

f(x)=5x−2f(x) = 5x - 2f(x)=5x−2

f(x)=x3+4f(x) = x^3 + 4f(x)=x3+4

f(x)=cos⁡(x)f(x) = \cos(x)f(x)=cos(x)

f(x)=2xf(x) = 2^xf(x)=2x

[4]
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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