Math 211Q - Elementary Differential Equations Spring 2007 - Section 11
Announcements
01-12
Important dates: Our first day of class is January 17th. The last day to drop a class without a W appearing on your transcript is January 29th, and the last day to withdraw under any circumstances is March 26th.
02-22
The practice exam is now posted below. We will go oer this AND assigned homework problems in class on Monday. I reiterate that you must be working through the problems in the text as well as reading the text, not just working on this practice exam! To do well you must be able to solve these problems quickly and efficiently, which is a skill learned by practice!
03-14
The material on nullclines and using them to sketch the phase plane is covered in our textbook in Section 5.2, not Section 5.1 as I had said in class. My apologies for the confusion.
04-09
The eigenvalue/eigenvectors for the practice exam are listed below. I write "eigenvalue1, (corresponding, eigenvector1); eigenvalue2, (corresponding, eigenvector2)."
6a) 1, (0,1); 5, (2,1)
6b) repeat eigenvalue, not covered
6c) 2+i, (-2,1+i)
6d) 3+i, (-5,-2+i)
7a) 3, (2,1); 10, (1,-3)
7b) 1, (2,-3); 5, (-2,1)
7c) 2+3i, (5,1+3i)
7d) 4+i, (2,1-i)
Section 3.1)5-7,16,17,24-29 Section 3.2)1-10(abde),11-19,21,23 Section 3.3)1-12,19,20 Section 3.4)1,2,3-12,15-17 Section 5.1)1-6,7-16(find the Jacobian as a part of part (b))
