MATH 110 Midterm: Math 110 Exam 3 V4
Document Summary
This test is a closed-book test; you are allowed to use a calculator but you have to show all work. Be sure to look at all problems before deciding which to do rst. Note that some problems are easier than others. You may use the backs of the pages if you need additional space. Be sure to show your work: (30 points) (a) find on which interval the function f (x) = ward or downward. 24 x2 + 12 is concave up- (b) given that f (x) = 2x3. 1 = 5: (30 points) (a) the demand and cost functions for a product are p = 6000 0. 4x2 and c = 2400x + 5200. Write down the pro t function and nd the di erential of the pro t when the production level changes from 30 to 32. (b) a feed-lot farmer has 1200 feet of fencing with which to enclose two adjacent rectangular corrals.
