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Inverse and Composite Functions

Inverse and Composite Functions

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12
Question 1
57%

The function f f\,f is such that

f(x)=3x−24 f(x) = \frac{3x - 2}{4} f(x)=43x−2​
a.

Find f(−7)f(-7)f(−7)

[2]
b.

Express the inverse function f−1f^{-1}f−1 in the form f−1(x)=…f^{-1}(x) = \dotsf−1(x)=…

[2]
c.

The function g g\,g is such that

g(x)=19−x g(x) = \sqrt{19 - x} g(x)=19−x​

Find fg(3)fg(3)fg(3)

[3]
d.

Which values cannot be included in any domain of ggg?

[2]
Markscheme

Inverse and Composite Functions Questions

  1. IGCSE
  2. /Maths
  3. /Inverse and Composite Functions

4 exam-style questions on Oxford AQA IGCSE Maths Inverse and Composite Functions. Each one has a worked solution and a mark scheme showing where the marks go.

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