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Mathematics
Algebra
Notation, vocabulary and manipulation
Functions
Functions
What You Need to Know
Interpret simple expressions as functions with inputs and outputs.
Interpret the reverse process as an inverse function.
Interpret the succession of two functions as a composite function.
Use function notation
f
(
x
)
f(x)
f
(
x
)
,
f
g
(
x
)
fg(x)
f
g
(
x
)
, and
f
−
1
(
x
)
f^{-1}(x)
f
−
1
(
x
)
.
Revision Notes
1
Functions
14 key terms
Practise with Past Papers
Key Terms & Definitions
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