(a)[2]
Solve $f(x)=g(1)$.
(b)[2]
Find $fh(3)$.
(c)[2]
Find the inverse, $f^{-1}(x)$.
(d)[3]
Find $gf(x)$ in simplest form.
(e)[1]
Solve $h^{-1}(x)=0.5$.
(f)[1]
$\dfrac{1}{h(x)}=2^{kx}$. Write down $k$.
Mathematics 0580 · IGCSE · Functions
Functions — practice question
Given $f(x)=2x+1$, $g(x)=x^2+4$ and $h(x)=2^x$.