Precalc0101to0102-page7

Precalc0101to0102-page7 - (Section 1.1 Functions 1.1.6...

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(Section 1.1: Functions) 1.1.6 Example 7 (Failure to Evaluate a Non-Function; Revisiting Example 3) Let the relation S = 5, 1 () ,5 , ± ,7 {} . If we had erroneously identified S as a function and renamed it f , we would see that f 5 is not well-defined . It is unclear whether its value should be 1 or . § A “function rule ” describes how a function assigns an output to an input. It is typically given by a defining formula such as fx = x 2 . Example 8 (Squaring Function: Evaluation) Let = x 2 on ± . • This means that we are defining a function f by the rule
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This document was uploaded on 12/29/2011.

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