| Exam Board | AQA |
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| Module | Paper 3 (Paper 3) |
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| Year | 2022 |
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| Session | June |
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| Topic | Composite & Inverse Functions |
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3 The function f is defined by
$$f ( x ) = 2 x + 1$$
Solve the equation
$$\mathrm { f } ( x ) = \mathrm { f } ^ { - 1 } ( x )$$
Circle your answer.
$$x = - 1 \quad x = 0 \quad x = 1 \quad x = 2$$