The functions f f\,f and g g\,g are defined by
f:x→ln(2x−1),x∈R,x>12 f: x \rightarrow \ln(2x - 1), \quad x \in \mathbb{R}, x > \frac{1}{2} f:x→ln(2x−1),x∈R,x>21 g:x→4x−1,x∈R,x≠1 g: x \rightarrow \frac{4}{x-1}, \quad x \in \mathbb{R}, x \neq 1 g:x→x−14,x∈R,x=1Find the exact value of fg(3)fg(3)fg(3)
Find an expression for f−1(x)f^{-1}(x)f−1(x) and state its domain
Sketch the graphs of f(x)f(x)f(x) and f−1(x)f^{-1}(x)f−1(x) on the same diagram
Sketch the graph of y=∣g(x)∣y = |g(x)|y=∣g(x)∣
Find the exact values of ∣4x−1∣=2\displaystyle | \frac{4}{x-1} | = 2∣x−14∣=2
Practise Edexcel A Level Maths 2.7 Solving Modulus Problems with exam-style questions for A Level Maths. 32 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.