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3.2 Algebra and Functions (A-level only)
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Question 20
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Markscheme
f(x)=4x−1x−2x≥3 f(x) = \frac{4x-1}{x-2} \quad x \geq 3
f
(
x
)
=
x
−
2
4
x
−
1
x
≥
3
a.
Find
ff(3)ff(3)
f
f
(
3
)
[2]
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3
Grade answer
b.
State the range of
ff
f
.
[1]
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3
Grade answer
c.
Find
f−1(x)f^{-1}(x)
f
−
1
(
x
)
and state its domain
[3]
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Markscheme
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3
Grade answer
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3.2 Algebra and Functions (A-level only) Questions
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3.2 Algebra and Functions (A-level only)
