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PreCalculus Rational Inequalities Sign Chart Tutorial

Review homework and notes on Rational Inequalities. Learn to use a sign chart to find intervals of x where functions are zero. Homework includes practice questions.

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PreCalculus Rational Inequalities Sign Chart Tutorial

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  1. Today in Precalculus • Go over homework • Notes: Rational Inequalities • Homework

  2. Rational Inequalities Use a sign chart to find the intervals of x for which f(x)= 0 x = 2, -3; f(x) UND x = 5, -4 • f(x) > 0 (-4,-3)υ(-3,2)υ(5,∞) • f(x) < 0 (-∞, -4)υ(2,5)

  3. Use a sign chart to find the intervals of x for which f(x)= 0 x = -2, 4; f(x) UND x = 1, 7 • f(x) ≥ 0 [-2,1)υ [4] υ(7,∞) • f(x) < 0 (-∞, -2)υ(1,4)υ(4,7)

  4. Use a sign chart to find the intervals of x for which f(x)= 0 x = 3, 5; f(x) UND x = -2, 8 • f(x) ≥ 0 (-∞,-2)υ[3] υ[5,8)υ(8,∞) • f(x) ≤ 0 (-2,5]

  5. Homework: pg 265: 25,26, 33-40 Chapter 2 test: Tuesday, November 26

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