Today in Precalculus

• Notes: Rational Inequalities• Homework

Rational InequalitiesUse a sign chart to find the intervals of x for which

f(x)= 0 x = 2, -3; f(x) UND x = 5, -4a) f(x) > 0 (-4,-3)υ(-3,2)υ(5,∞)b) f(x) < 0

(-∞, -4)υ(2,5)

Use a sign chart to find the intervals of x for which

f(x)= 0 x = -2, 4; f(x) UND x = 1, 7a) f(x) ≥ 0 [-2,1)υ [4] υ (7,∞)b) f(x) < 0

(-∞, -2)υ(1,4)υ(4,7)

Use a sign chart to find the intervals of x for which

f(x)= 0 x = 3, 5; f(x) UND x = -2, 8a) f(x) ≥ 0 (-∞,-2)υ[3] υ[5,8)υ(8,∞)b) f(x) ≤ 0

(-2,5]

Homework: pg 265: 25,26, 33-40Chapter 2 test: Friday, December 4