Mathematics 0580 · IGCSE · Functions

Functions — practice question

The functions are defined by $f(x) = 3x - 5$ and $g(x) = 2^x$.
(a)[2]

Determine $fg(3)$.

(b)[2]

Determine $f^{-1}(x)$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “This can be written as $3(2^x)-5$ or as $f(8)$” …

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