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Edexcel IGCSE Math A Higher 3.2.HB function notation

Edexcel IGCSE Math A Higher 3.2.HB function notation
Edexcel IGCSE Math A syllabusMath A 4MA1First assessment 2018

Practise function-notation questions by substituting the given input into the function rule and simplifying the output accurately.

How this is tested

  • Substitute values such as 3, -2 or 1/3 into f(x) or g(x) before simplifying.
  • Use function notation to report the output value with correct signs and fractions.

Question 19(a)

[Maximum number: 1]

The functions f and g are such that

f(x)=3x−2 g(x)=x2x−1\mathrm{f}(x)=3 x-2 \quad \mathrm{~g}(x)=\frac{x}{2 x-1}

Find g(3)