MATH 140A EXAM II, SPRING 2003

answer key

1. A 2. C 3. E 4. B 5. D 6. E 7. D 8. A 9. B 10. C

11. T, F, F, F, T

12. positive, decreasing, concave up

13. -54 miles/hour

14.

(a) x = 0, 4

(b) x = 0 is a local maximum, x = 4 is a local minimum

(c) (0,3) is the absolute maximum, (3,-24) is the absolute minimum

15. r = 2