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1.5.8 Composite and inverse functions (A-level only)

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Question 7
f(x)=2x+5x−3x≥5 f(x) = \frac{2x+5}{x-3} \quad x \geq 5 f(x)=x−32x+5​x≥5
a.

Find ff(5)ff(5)ff(5)

[2]
b.

State the range of fff.

[1]
c.

Find f−1(x)f^{-1}(x)f−1(x) and state its domain

[3]

1.5.8 Composite and inverse functions (A-level only) Questions

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