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3.2.3 Algebra and Functions (A-level only)
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Question 28
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Markscheme
f(x)=3x+1x−2x≥4 f(x) = \frac{3x+1}{x-2} \quad x \geq 4
f
(
x
)
=
x
−
2
3
x
+
1
x
≥
4
a.
Find
ff(4)ff(4)
f
f
(
4
)
[2]
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3
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b.
State the range of
ff
f
.
[2]
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3
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c.
Find
f−1(x)f^{-1}(x)
f
−
1
(
x
)
and state its domain
[3]
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3
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3.2.3 Algebra and Functions (A-level only) Questions
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3.2.3 Algebra and Functions (A-level only)
