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1 markPaper 1 · Multiple choiceAddition Rule for Probability

CSEC Additional Mathematics · 2014 · Paper 1 · Question Q11

A function is defined by f: x \to \frac{1}{x + 1}, x \neq -1. The value of f^{-1}(1) is

  1. (A)0
  2. (B)\frac{1}{2}
  3. (C)1
  4. (D)2

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