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3.1.4 Algebra and functions (A-level only)

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Question 8
f(x)=5x+2x−4x≥6 f(x) = \frac{5x+2}{x-4} \quad x \geq 6 f(x)=x−45x+2​x≥6
a.

Find ff(6)ff(6)ff(6)

[2]
b.

State the range of fff.

[1]
c.

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

[3]

3.1.4 Algebra and functions (A-level only) Questions

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  3. /3.1.4 Algebra and functions (A-level only)