MATH 121 Midterm: MATH 121 Drexel Math121Exam2BSol
Document Summary
Math 121 - exam 2 - 11/12/2012: for the free response section, you must show all work. Answers without proper justi - cation will not receive full credit. Partial credit will be awarded for signi cant progress towards the correct answer. Cross o any work that you do not want graded: you have 50 minutes to complete this exam. Immediately: you may not use any electronic devices including (but not limited to) calculators, cell phones, or ipods. Problem 1 problem 2 problem 3 problem 4 multiple choice. Reminder: for each of the following problems, you must show all of your work to earn full credit. Each problem is worth 13 points: a 15-foot ladder is placed against a vertical wall. Suppose that the bottom of the ladder slides away from the wall at a constant rate of 3 feet per second. 2: using implicit di erentiation, compute only. d2y dx2 .
