There are three cases of applications for variables and functions:
- Conversions between currencies.
- Equivalence between weight and cost.
- Conversions between length units.
Applications of variables and functions
A variable represents an input characteristic of a phenomena and a function represents an expression in terms of a input characteristic that obtains a measure of an output characteristic of the same phenomena.
A common application for variables and functions are conversion formulas, which determines the equivalence of [tex]x[/tex] units of an input characteristic as [tex]y[/tex] units of an output characteristic. There are some examples:
- Conversions between currencies.
- Equivalence between weight and cost.
- Conversions between length units.
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