Homework should be turned in at the BEGINNING OF CLASS. All problem numbers refer to Differential Equations, 3rd ed., by Blanchard, Devaney, and Hall, the required text for the course. You should write up solutions neatly to all problems, making sure to SHOW ALL YOUR WORK. A nonempty subset will be graded.
Note: For this assignment, you are allowed (and encouraged) to work with up to three other students and turn in one assignment for your group, listing all names at the top of the assignment. Each student in the group will receive the same grade for the assignment.

Section 5.1
Problems:   1, 4, 5, 9, 14

Section 5.2
Problems:   1, 2, 7, 12

Section 5.3
Problems:   1, 2, 9, 10, 11, 12
Note: Feel free to use any technology you would like to sketch the level curves in problems #1, 2. It is possible (but challenging) to draw these by hand.