CAIE A Level Mathematics 9709 · Functions

Functions: calculation question

3 marksFoundation

The function $f$ is defined by $f(x) = 3x + 1$ , for $x \in \mathbb{R}$ .

(a)
Find $f^{-1}(x)$ , the inverse function of $f$ . Express your answer in the form $f^{-1}(x) = \ldots$ .
[3]

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Functions: calculation question

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