(a(i))[1]
Find the value of $g(2)$.
(a(ii))[2]
Find the value of $gf(-1)$.
(a(iii))[3]
Find the value of $f^{-1}(x)$.
(b)[5]
Solve the equation $f(x)=g(x)$.
Mathematics 0580 · IGCSE · Functions
Functions — practice question
The functions are $f(x)=\frac{21}{2x-1}$, $x\neq\frac{1}{2}$, and $g(x)=3x+4$.