(a)[1]
Find the value of $f(-3)$.
(b)[2]
Find the value of $x$ when $f(x)=19$.
(c)[2]
Find the value of $fh(2)$.
(d)[3]
Find $gf(x) + f(x) + x$, and give your answer in its simplest form.
(e)[2]
Find the inverse function $f^{-1}(x)$.
Mathematics 0580 · IGCSE · Functions
Functions — practice question
The functions are $f(x) = 3x - 2$, $g(x) = x^2$, and $h(x) = 3^x$.