146 CHAPTER 2 Applications of the Derivative In Exercises 7-12, sketch the graph of a function that has the prop- erties described. 7. (2)-1; f'(2)= 0; concave up for all .x. 8. f(-1)-0; f'(x) < 0 for x < -1, f(-1)-0 and /'(x) > 0 for x>-1. 9. f(3) = 5: f'(x) > 0 for x <3, f'(3)-0 and f'(x) > 0 for x>3. 10. (-2,-1) and (2, 5) are on the graph; /'(-2)-0 and /'(2) - 0; f"(x) > 0 for x < 0, "(0)-0, f(x) < 0 for x > 0. 11. (0, 6), (2, 3), and (4,0) are on the graph; f(0) = 0 and f'(4)=0; f(x) <0 for x<2, f"(2)-0, f"(x) > 0 for x > 2. 12. f(x) defined only for x20; (0,0) and (5, 6) are on the graph; f'(x) > 0 for x ≥ 0; f(x) < 0 for x < 5, "(5)-0, f(x) > 0 for x>5. In Exercises 13-18, use the given information to make a good sketch of the function f(x) near x = 3. 13. f(3) = 4, f'(3)=-"(3) = 5 14. f(3) = -2, f'(3)=0, f(3) = 1 15. f(3) = 1, f'(3) = 0, inflection point at x = 3, f'(x) > 0 for x > 3 16. f(3) = 4, f'(3)=-."(3) = -2 17. f(3) = -2, f'(3) = 2, f(3) = 3 18. f(3) = 3, f'(3) = 1, inflection point at x = 3, f"(x) < 0 for x > 3 19. Refer to the graph in Fig. 19. Fill in each box of the grid with either POS, NEG, or 0. 3
146 CHAPTER 2 Applications of the Derivative In Exercises 7-12, sketch the graph of a function that has the prop- erties described. 7. (2)-1; f'(2)= 0; concave up for all .x. 8. f(-1)-0; f'(x) < 0 for x < -1, f(-1)-0 and /'(x) > 0 for x>-1. 9. f(3) = 5: f'(x) > 0 for x <3, f'(3)-0 and f'(x) > 0 for x>3. 10. (-2,-1) and (2, 5) are on the graph; /'(-2)-0 and /'(2) - 0; f"(x) > 0 for x < 0, "(0)-0, f(x) < 0 for x > 0. 11. (0, 6), (2, 3), and (4,0) are on the graph; f(0) = 0 and f'(4)=0; f(x) <0 for x<2, f"(2)-0, f"(x) > 0 for x > 2. 12. f(x) defined only for x20; (0,0) and (5, 6) are on the graph; f'(x) > 0 for x ≥ 0; f(x) < 0 for x < 5, "(5)-0, f(x) > 0 for x>5. In Exercises 13-18, use the given information to make a good sketch of the function f(x) near x = 3. 13. f(3) = 4, f'(3)=-"(3) = 5 14. f(3) = -2, f'(3)=0, f(3) = 1 15. f(3) = 1, f'(3) = 0, inflection point at x = 3, f'(x) > 0 for x > 3 16. f(3) = 4, f'(3)=-."(3) = -2 17. f(3) = -2, f'(3) = 2, f(3) = 3 18. f(3) = 3, f'(3) = 1, inflection point at x = 3, f"(x) < 0 for x > 3 19. Refer to the graph in Fig. 19. Fill in each box of the grid with either POS, NEG, or 0. 3
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter5: Graphs And The Derivative
Section5.3: Higher Derivatives, Concavity, And The Second Derivative Test
Problem 74E
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