Precalc0101to0102-page15

Precalc0101to0102-page15 - (Section 1.1: Functions) 1.1.14...

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(Section 1.1: Functions) 1.1.14 Example 16 (Finding a Domain) Let gt () = 3 t + 9 2 t 2 + 20 t . Find Dom g . WARNING 14 : Don’t get too attached to f and x . Be flexible. § Solution The square root operation requires: 3 t + 9 ± 0 3 t ±² 9 t 3 We forbid zero denominators, so we also require: 2 t 2 + 20 t ± 0 2 tt + 10 ± 0 t ± 0 and t + 10 ± 0 t ± and t 10 WARNING 15 : We use the connective “ and here, not “or.” (See Footnote 4.) We already require
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This document was uploaded on 12/29/2011.

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