(a)[2]
Find the value of $fh(2)$.
(b)[2]
Find the inverse function $f^{-1}(x)$.
(c(i))[2]
Simplify the expression $f(1-2x)$.
(c(ii))[4]
Simplify the expression $gf(x) - 9g(x)$.
(d)[2]
Given $\frac{1}{h(x)} = g^kx$, find the value of $k$.
Mathematics 0580 · IGCSE · Functions
Functions — practice question
The functions are defined as $f(x) = 4 - 3x$, $g(x) = x^2 + x$, and $h(x) = 3^x$.