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Answers to LIFE Final Exam Review p 1 cos x 4 5 sin4 x 2 93 3 1 ft min 4 1 5 ln 10 28 4 years 2 ln 3 20 2 20 w d cm 3 3 16 3 i j 265 265 3 cos 1 10 3 r t 2t i 3 t j 2 1 i j 2 1 2 1 4 t 5 6 7 8 9 10 y 1 11 1 x e 4e 1 8 12 a 3 c 22 13 14 15 16 17 1 4 3 2 4 5 9 2 4 3 1 2 x 18 1 x2 1 1 19 f x 3 sin 1 x 3 ln x x2 3 ln 2 6 2 24 20 f has a relative maximum at the point 3 6 The tangent line is horizontal and the function is concave down at that point 21 13 9 1 22 78 23 2 4 2ex2e 1 x ln x 24 1 2 25 x2 1 e 1 2x 2 26 27 cos 4x 8x sin 4x cos3 4x 28 0 9 2
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