Of course we cant plug all possible value of x into

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Unformatted text preview: rn to Problems] © 2007 Paul Dawkins 174 http://tutorial.math.lamar.edu/terms.aspx College Algebra The Definition of a Function We now need to move into the second topic of this chapter. The first thing that we need to do is define just what a function is. There are lots and lots of definitions for a function out there and most of them involve the terms rule, relation, or correspondence. While these are more technically accurate than the definition that we’re going to use in this section all the fancy words used in the other definitions tend to just confuse the issue and make it difficult to understand just what a function is. So, here is the definition of function that we’re going to use. Again, I need to point out that this is NOT the most technically accurate definition of a function, but it is a good “working definition” of a function that helps us to understand just how a function works. “Working Definition” of Function A function is an equation (this is where most definitions use one of the words given above) for which any x tha...
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