One to One Functions
In this lesson, we learn about one to one functions and the importance of each element in the domain appearing to exactly one element in the range. The teacher uses a numerical subfunction and a graphing analysis to explain the difference between one to one and non-one to one functions. It's emphasized that one to one functions are crucial when talking about inverses, and that every element in the domain must map to a unique element in the range.
Overview of one to one functions
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- Do the following set of ordered pairs represent a one-to-one function (i) {(2,4),(3,6),(5,10),(1.5,3)} (ii) {(2,4),(-2,4),(3,9),(-3,9)}
