Real-world Examples
For example, let ƒ be the function that converts a temperature in degrees Celsius to a temperature in degrees Fahrenheit:
then its inverse function converts degrees Fahrenheit to degrees Celsius:
since
Or, suppose ƒ assigns each child in a family its birth year. An inverse function would output which child was born in a given year. However, if the family has twins (or triplets) then the output cannot be known when the input is the common birth year. As well, if a year is given in which no child was born then a child cannot be named. But if each child was born in a separate year, and if we restrict attention to the three years in which a child was born, then we do have an inverse function. For example,
Read more about this topic: Inverse Function
Famous quotes containing the word examples:
“No rules exist, and examples are simply life-savers answering the appeals of rules making vain attempts to exist.”
—André Breton (18961966)