# MATH 2280 FALL 2012 Introduction to Differential Equations

## Announcements:

• Thursday 8/30 at 2 pm, in AEB 320: homework problem session
• The second homework problem session originally scheduled for Thursday 9/13 is to be rescheduled.
• We have reserved AEB 310 for a problem session Friday (9/14), 1:30-2:30 pm.
• Problem session, Thursday (9/20), 4:00-5:00 pm, LCB 219.
• MATLAB session, Monday (9/24), 4:00-5:00 pm, LCB 115.
• Change of office hour: the office hour for Friday (9/28) has be moved to Thursday (9/27) from 12:00 pm to 1:30 pm.
• Problem session, Thursday (10/25), 4:00-5:00 pm, LCB 323.
• Problem session, Thursday (11/8), 7:30-8:20 am, WEB 1230, also at 4:00 pm, LCB 335.
• Problem sessions, Tuesday (12/11) and Thursday (12/13), 4:00-5:00 pm. LCB 225.
• Office hours, Tuesday (12/11) 12:00-1:00 pm, and Wednesday (12/12), 12:00-2:00 pm.
• Final Exam: Friday (12/14) 8:00-10:00 am, WEB 1230.

## Homework Assignments:

• Week 1: (Section 1.1) 2, 6, 9, 14, 24, 29, 35, 45; (Section 1.2) 3, 7, 16, 20, 24, 30, 35; (Section 1.3) 2, 7, 12, 26, 30. Due 8/27 at 5 pm.
Solutions
• Week 2: (Section 1.4) 3, 6, 22, 26, 31, 37, 40, 43; (Section 1.5) 5, 14, 17, 20, 23, 29, 33, 38; (Section 2.1) 2, 6, 11, 15, 27. Due 9/4 at 5 pm.
Solutions
• Week 3: (Section 2.2) 4, 7, 11, 14, 16, 19, 21, 26; (Section 2.3) 2, 6, 9, 12, 20, 25; (Section 2.4) 2, 4, 8, 12, 15, 19, 27. Due 9/10 at 5 pm.
Solutions
• Week 4: (Section 2.5) 7, 10, 12, 13, 21, 26, 27; (Section 2.6) 3, 8, 12, 13, 21, 26, 27; (Section 3.1) 3, 6, 10, 14, 23, 24, 35, 40, 45; (Section 3.2) 2, 5, 8, 11, 14, 22, 27, 31. Due 9/17 at 5 pm.
Solutions
• MATLAB Project 1 Due 9/28 at 5 pm.
• Week 5: (Section 3.3) 2, 6, 14, 18, 22, 25, 28, 40, 52; (Section 3.4) 2, 5, 9, 18, 24, 27; (Section 3.5) 2, 13, 23, 28, 34, 38. Due 9/28 at 5 pm. (notice the change)
Solutions
• Weeks 6/7: (Section 3.6) 2, 9, 12, 17, 21, 27; (Section 3.7) 2, 5, 9; (Section 4.1) 3, 7, 12, 24; (Section 4.2) 3, 12, 24, 28, 38, 40. Due 10/15 at 5 pm.
• Week 8: (Section 4.3) 3, 10, 12; (Section 5.1) 12, 16, 22; (Section 5.2) 2, 5, 10, 22, 30; (Section 5.3) 4, 10, 12, 16, 21. Due 10/22 at 5 pm.
• Week 9: (Section 5.4) 2, 6, 9, 24, 28, 35; (Section 5.5) 3, 6, 8, 12, 18, 22, 26. Due 10/29 at 5 pm.
• Week 10: (Section 5.6) 3, 6, 9, 17, 23, 27; (Section 6.1) 2, 5, 10, 14, 20, 24; (Section 6.2) 2, 8, 12, 15, 22. Due 11/5 at 5 pm.
Solutions
• Week 11: (Section 6.3) 1, 5, 20, 21, 22; (Section 6.4) 2, 3, 6, 12. Due 11/12 at 5 pm.
• Week 12: (Section 7.1) 4, 8, 14, 17, 20, 25, 29, 28; (Section 7.2) 3, 7, 12, 21, 36; (Section 7.3)2, 7, 14, 30, 34. Due 11/19 at 5 pm.
• Week 13: (Section 7.4) 2, 6, 9, 13, 20, 24, 30; (Section 7.5) 3, 14, 25, 32; (Section 7.6) 2, 14. Due 11/27 (Tuesday) at 5 pm.
• Week 14: (Section 9.1) 4, 7, 13, 17, 20, 26, 30; (Section 9.2) 2, 7, 11, 19; (Section 9.3) 5, 9, 12, 18, 22. Due 12/3 at 5 pm.
• Week 15: (Section 9.4) 3, 8, 15; (Section 9.5) 4, 8, 14, 22; (Section 9.6) 4, 9, 14, 16; (Section 9.7) 2, 9. Due 12/14 at 5 pm.