Mathematics 4024 · O Level · Functions

Functions — practice question

Let $f(x)=\frac{3x-1}{2}$ and $g(x)=5^{x}$.

(a)[1]

Find the value of $f(-7)$.

(b)[2]

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

(c)[3]

Using $f\left(\frac{9}{25}\right)=g(x)$, find $x$.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$-11$ ” …