In Exercises, (a) Use a graphing calculator to tell where the rational function P(x)/Q(x) is discontinuous, and
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In Exercises,
(a) Use a graphing calculator to tell where the rational function P(x)/Q(x) is discontinuous, and
(b) Verify your answer from part (a) by using the graphing calculator to plot Q(x) and determine where Q(x) = 0. You will need to choose the viewing window carefully.
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