Precalc0101to0102-page30

Precalc0101to0102-page30 - (Section 1.2: Graphs of...

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(Section 1.2: Graphs of Functions) 1.2.10 “Zeros of a Fraction” If fx () is of the form numerator Nx denominator Dx , then the zeros of f are the zeros of N that are in Dom f ( WARNING 6 ). • In particular, a zero of f cannot make any denominator undefined or equal to 0. Example 8 (Finding “Zeros of a Fraction”) Find the zeros (or roots) of f , where = x 2 ± 9 x + 7 . § Solution Solve = 0 :
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