Flashcards
What is the domain of a function??
The set of all possible inputs.
What is the range of a function??
The set of all possible outputs.
What is the range of a function sometimes called??
The codomain.
What is a mapping??
A transformation from one set of numbers into a different set of numbers.
When is a mapping a function??
When every input has a distinct output.
Other than a one-to-one function, what’s another type of mapping that is also a function??
A many-to-one function.
How could you write the range of a function that has to be greater than $0$??
$$ f(x) \ge 0 $$
2021-07-07
Instead of solving $$f(x) = f^{-1}(x)$$ What can you solve instead??
$$ f(x) = x \\ f^{-1}(x) = x $$
Instead of solving $$fg(x) = 7$$ What can you solve instead??
$$ g(x) = f^{-1}(x) $$
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date: 2021-07-05 10:58
tags:
- '@?maths'
- '@?school'
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title: Maths - Functions and Mappings