Question

one to many functions don't exist?

Answer 1

True they don't exist...

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Answer 2

Answer:

A function is said to be one-to-one if every y value has exactly one x value mapped onto it, and many-to-one if there are y values that have more than one x value mapped onto them. This graph shows a many-to-one function. ... One complication with a many-to-one function is that it can't have an inverse function.