Edexcel C3 — Question 1

Exam BoardEdexcel
ModuleC3 (Core Mathematics 3)
TopicComposite & Inverse Functions
  1. The function f is defined by
$$\mathrm { f } ( x ) \equiv 2 + \ln ( 3 x - 2 ) , \quad x \in \mathbb { R } , \quad x > \frac { 2 } { 3 } .$$
  1. Find the exact value of \(\mathrm { ff } ( 1 )\).
  2. Find an expression for \(\mathrm { f } ^ { - 1 } ( x )\).
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