CAIE IGCSE Mathematics Extended Functions Domain and Range

Practise substituting numbers or expressions into functions and using a stated domain to determine outputs, equations and the corresponding range.

Syllabus
2028–2030
Objective
E2.13.1
Level
Extended

Exam points

  • replace every x in the function rule with the given number or bracketed expression
  • evaluate the rule for each member of a finite domain and list the distinct range values
  • form and solve an equation when a function value or equality between two functions is given

E2.13.1 Understand functions, domain and range and use function notation. question 1

[Maximum number: 2]

10f(x)=4−3x g(x)=x2+x h(x)=3x10 \quad \mathrm{f}(x)=4-3 x \quad \mathrm{~g}(x)=x^{2}+x \quad \mathrm{~h}(x)=3^{x}

Simplify.

f(1-2 x)

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