Functions (CIE IGCSE Maths: Extended)

Topic Questions

1 mark

$g (x) = 1 - 2 x h (x) = \frac{1}{x}, x \neq 0 j (x) = 5^{x}$

Find $hh (x)$ , giving your answer in its simplest form.

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1 mark

Find $j (5)$ .

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2 marks

$j (x) = hg (- 12)$

Find the value of $x$ .

$x =$ ................................................

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2 marks

$f (x) = 3 x - 5$

The domain of $f (x)$ is $\{- 3, 0, 2\}$ .

Find the range of $f (x)$ .

{ ........................................... } [2]

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1 mark

$h (x) = 4^{x}$ .

Find $x$ when $h^{- 1} (x) = 2$ .

$x =$ ................................................

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