Pre-Calc Homework Solutions 193

Pre-Calc Homework Solutions 193 - Chapter 4 Review(a...

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Unformatted text preview: Chapter 4 Review (a) Approximately [ 0.578, 1.692] (b) Approximately ( (c) Approximately ( (e) Local maximum at (f) 15. y y (1.079, 13.601) 2x 4/5 8 1/5 x 5 193 , 0.578] and [1.692, ) , 1.079) (1.692, 20.517);local minimum at ( 0.578, 0.972) (d) Approximately (1.079, ) x 9/5 9 4/5 x 5 8 5 5 9x x Intervals Sign of y x 0 0 x 8 9 8 9 x Behavior of y Decreasing y 8 x 6/5 25 36 1/5 x 25 Increasing 4(2 9x) 25x 6/5 2 9 Decreasing Intervals Sign of y x 2 9 x 0 0 x Behavior of y Concave up Concave down Concave down Graphical support: [ 4, 4] by [ 3, 3] (a) 0, (b) ( (c) (d) 8 9 , 0] and , 2 9 8 , 9 2 , 0 and (0, 9 ) 8 10 , 9 9 8 4/5 9 (e) Local maximum at (0.889, 1.011); local minimum at (0, 0) (f) 2 20 , 9 9 2 4/5 9 2 , 0.667 9 ...
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