As a final topic we need to come back and touch on

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Unformatted text preview: ther function. g ( x 2 - 5) = x 2 - 5 + 6 = x2 + 1 [Return to Problems] © 2007 Paul Dawkins 180 College Algebra Function evaluation is something that we’ll be doing a lot of in later sections and chapters so make sure that you can do it. You will find several later sections very difficult to understand and/or do the work in if you do not have a good grasp on how function evaluation works. While we are on the subject of function evaluation we should now talk about piecewise functions. We’ve actually already seen an example of a piecewise function even if we didn’t call it a function (or a piecewise function) at the time. Recall the mathematical definition of absolute value. if x ³ 0 ìx x =í î- x if x < 0 This is a function and if we use function notation we can write it as follows, if x ³ 0 ìx f ( x) = í î- x if x < 0 This is also an example of a piecewise function. A piecewise function is nothing more than a function that is broken into pieces and which piece you...
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This note was uploaded on 06/06/2012 for the course ICT 4 taught by Professor Mrvinh during the Spring '12 term at Hanoi University of Technology.

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