(a)[2]
Determine $x$ when $f(x) = 245$.
(b)[2]
Determine $x$ when $f^{-1}(x) = 7$.
Mathematics 0580 · IGCSE · Functions
Functions — practice question
The rule for the function is $f(x) = 3^x + 2$.
Mathematics 0580 · IGCSE · Functions
Determine $x$ when $f(x) = 245$.
Determine $x$ when $f^{-1}(x) = 7$.