M119+practice+test+3+answers

M119+practice+test+3+answers - never concave down since the...

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M119 Practice Test 3 answers 1. x x xe e 4 4 4 2. 5 6 28 21 t t 3. ) 5 (ln 5 3 3 2 2 x x x x + + + 4. ) 1 3 ( ) ( 14 2 6 3 x x x 5. 4 4 ln 5 x x x + 6a. $9600 6b. $93 7. y = 6x + 1 8. 2 3 2000 ) ( q q q R = q q C 164 3700 ) ( + = q = 306 9. The critical point (0, 2) is a local min. The critical point (1, 2.083333) is neither a min nor a max $277,208 10. The point (-3, 112) IS an inflection point. The point (0, -50) is NOT an inflection point. 11. (a) [0, 2] (b) [-1, 0] (c) [-1, 2] since the second derivative is always positive (d)
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Unformatted text preview: never concave down since the second derivative is always positive (e) 41 (f) 1 12. q = 1125 R = $50,625 13. 1350 10 + = p q p p R 1350 10 2 + = p = $67.50 R = $45,562.50 14. f is increasing: x < -3, x > 1 f is decreasing: -3 < x < 1 local max at x = -3 local max value is 4 local min at x = 1 local min value is -6.66666 f is concave up: x > -1 f is concave down: x < -1 inflection point (-1, -1.33333)...
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This note was uploaded on 10/23/2011 for the course MATH-M 119 taught by Professor Rainey during the Spring '10 term at IUPUI.

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