Math 153 quiz_4_soln

Math 153 quiz_4_soln - MATH 153 NAME SOLUTIONS QUIZ 4 SHOW...

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Unformatted text preview: MATH 153 NAME: SOLUTIONS QUIZ 4 SHOW YOUR WORK FOR FULL CREDIT. FEBRUARY 26, 2008 mz—Qx-i—M 1. Find the zeros of the function f(x) = 4:1: algebraically. =SC2—9\$+14=(\$—2)(I-7) 0 49; 4:2: 3:2, :1:=7 2. Let f(x) = m2 m 43:. (a) Determine the intervals over which f (:L') is increasing, decreasing, or constant. f(:1:) is increasing on (2, 00) and f[:1:) is decreasing on (—00, 2). (b) Determine the intervals over which f (.L') > 0. f(:c) > 0 on (—oo,0) U (4,00). 3. Graph the function f(:c) = { ...
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