(a)[1]
Find the value of $f(3)$.
(b)[2]
Find the inverse function $f^{-1}(x)$.
(c)[3]
Solve the equation $fg(x) = 25$.
(d)[2]
Find $x$ when $h^{-1}(x) = 2$.
Mathematics 0580 · IGCSE · Functions
Functions — practice question
The functions are given by $f(x) = 2x + 5$, $g(x) = x - 4$ and $h(x) = 5^x$.