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5 marksEvaluating Functions at Given Values

CSEC Mathematics · January 2005 · Paper 2 · Question 5(a)(iii)

The functions f and g are such that f(x) = (2x + 5) / (x - 4) and g(x) = 2x - 3. Calculate the value of:

Calculate the value of g⁻¹(7).

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Other parts of this question

  1. 5(a)(i)Calculate the value of g(4).[5 marks]
  2. 5(a)(ii)Calculate the value of fg(2).[5 marks]
  3. 5(b)Write as a single fraction in its simplest form 3/x + 4/(x + 1).[3 marks]
  4. 5(c)Calculate the value of 9^(1/2) × 8^(2/3) × 4⁻¹.[3 marks]

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