4.03: Exponential inverse function

0606/13/M/J/26 — Question 8 · 8 marks

\(f(x)=\mathrm e^{2x+1}\) for all real \(x\).
(a)
State the range of \(f^{-1}\).
[1]
(b)
State the domain of \(f^{-1}\).
[1]
(c)
Find \(f^{-1}(x)\).
[2]
(d)
On the same axes, sketch \(y=f(x)\) and \(y=f^{-1}(x)\), giving exact intercepts.
[4]
Official diagram for Question 8