The function f f\,f is defined by
f(x)=x2+8x+16,x∈R,x≥−4 f(x) = x^2 + 8x + 16, \quad x \in \mathbb{R}, x \geq -4 f(x)=x2+8x+16,x∈R,x≥−4State the range of fff.
Sketch the graphs of f(x)f(x)f(x) and f−1(x)f^{-1}(x)f−1(x) on the same diagram.
Find an expression for f−1(x)f^{-1}(x)f−1(x) and state its domain.
Practise Edexcel A Level Maths 2.4 Inverse Functions with exam-style questions for A Level Maths. 41 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.