The function f f\,f is defined by
f(x)=4+ln(8x−7),x∈R,x>0.875 f(x) = 4 + \ln(8x - 7), \quad x \in \mathbb{R}, x > 0.875 f(x)=4+ln(8x−7),x∈R,x>0.875Find the exact value of ff(1)ff(1)ff(1)
Find an expression for f−1(x)f^{-1}(x)f−1(x)
471 exam-style questions on Edexcel A Level Maths Functions and Graphs, covering 2.1 The Modulus Function, 2.2 Functions and Mappings, 2.3 Composite Functions, 2.4 Inverse Functions, 2.5 y=|f(x)| and y=f(|x|), 2.6 Combining Transformations, and 2.7 Solving Modulus Problems. Each one has a worked solution and a mark scheme showing where the marks go.