MATH 225 P1, Introductory Matrix Theory
Check your scores at Illinois Compass
Instructor: Jung-Jin Lee (junglee2@uiuc.edu)
Office: 341 Illini Hall
Phone: 217-333-6499
Office Hours: Mon and Wed, 10:30am ~ 11:30am, or by appointments.
Announcements
May 1 (Tue): The final will take place on May 5 (Sat) 1:30~4:30. Come to the (usual) classroom (142 HAB).
May 1 (Tue): No office hours on May 2 (Wed).
May 1 (Tue): Solutions to Exam 3. Average was 79.2 points.
Apr 22 (Sun): Exam 3 on May 1 (Tue). Exam 3 will cover sections 5.1~5.3, 6.1~6.3, and 6.5.
Apr 22 (Sun): HW #10 (Last homework. Due the beginning of the Exam 3 on May 1). Four problems.
Section 6.2: #2,4,6,*10,*14,15,26,27. Solution Section 6.3: *4,21,24. Solution
Section 6.5: *4,5,17,18,25. Solution
Apr 16 (Mon): HW #9 (Due the beginning of the class on Apr 24). Five starred problems.
Section 5.3: #2,*8,*14,*17,19,21,*22,23,27,31. Solution Section 6.1: #1,4,7,10,14,16,24,*27,28,31. Solution
Apr 11 (Wed): Solutions to Exam 2. Average was 71.8 points.
Apr 5 (Thu): HW #8 (Due the beginning of the class on Apr 17). Four starred problems.
Section 5.1: #*10,*18,21(skip d), 22(skip c), 23,24,*25,29. Solution Section 5.2: #4,*13,16,19. Solution
Mar 22 (Thu): HW #7 (Due the beginning of Exam 2 on Apr 3). Note that there are five starred problems.
Section 4.3: #*1,2,7,10,*14,16,19,23,24. Solution Section 4.5: #3,12,*14,*19,20,21,25,29,30. Solution
Section 4.6: #1,2,3,4,6,8,10,*16. solution
Mar 17 (Wed): Exam 2 on Apr 3 (Tue). Exam 2 will cover sections 3.1~3.3, 4.1~4.3, and 4.5~4.6
Mar 7 (Wed): HW #6 (Due the beginning of the class on Mar 15). Note that there are five starred problems.
Section 4.1: #1,2,*3,6,8~12,*16,*18. Solution Section 4.2: #2,*3,9,16,22,*24,25(skip c,e),27. Solution
Feb 28 (Wed): HW #5 (Due the beginning of the class on Mar 8). Note that there are four starred problems.
Section 3.1: #2,4,*10,12,20,22,38. Solution Section 3.2: #1,2,4,15~20,*22,*26,27~29,31~36,39. Solution
Section 3.3: #4,*6,7,8,20,22,24. Solution
Feb 20 (Tue): Solutions to Sections 1.5~1.7, 2.1~2.3 are given below.
Feb 16 (Fri): No office hours on Feb 21 (Wed) and Feb 28 (Wed). Please email me shoud you have any questions.
Feb 12 (Mon): HW #4 (Due the beginning of the class on Feb 20). Note that there are four starred problems.
Section 1.7: #12,*21,27,33,34,35,36. Solution Section 2.1: #1,9,*17. Solution
Section 2.2: #2,3,6,9,14,19,*32. Solution Section 2.3: #1,2,6,*11,15,17,19,27,28. Solution
Feb 9 (Fri): Exam 1 on Feb 22 (Thu). Exam 1 will cover sections 1.1~1.7 and 2.1~2.3.
Feb 5 (Mon): HW #3 (Due the beginning of the class on Feb 13). Note that there are five starred problems.
Section 1.5: #1,6,*8,11,16,*29,30,31,32,34,36. Solution Section 1.6: #*5, 12. Solution
Section 1.7: #1,4,*6,7,*10. Solution
Feb 4 (Sun): No regular office hours tomorrow, but I will be available after 3:00 pm until 5:00 pm.
Jan 30 (Tue): Office hours: Mon and Wed, 10:30am ~ 11:30am, or by appointments.
Jan 30 (Tue): HW #2 (Due the beginning of the class on Feb 6). Note that there are four starred problems.
Section 1.3: #1,5,*8,*11,21,24,29. Solution Section 1.4: #1,2,4,*13,*14,25. Solution
Jan 30 (Tue): The following website has a useful linear algebra toolkit. Check it out!
http://www.math.odu.edu/~bogacki/cgi-bin/lat.cgi
Jan 30 (Tue): Solutions to Sections 1.1 and 1.2 were posted below.
Jan 26 (Fri): Remark on the choice of free variables
Jan 26 (Fri): You can check your Homework / Midterms / Final scores at Illinois Compass.
It requires NetID and Password.
Jan 17 (Wed): HW #1 (Due the beginning of the class on Jan 25)
Section 1.1: #2,3,*13,*24,29,32. Solution Section 1.2: #1,2,*4,9,14,*17,18,21. Solution
Only starred problems will be collected and graded. So this time you need to do problems
13 and 24 in Section 1.1 and problems 4 and 17 in Section 1.2 (4 problems in total).
This policy (only starred problems are graded) will apply to all the upcoming HW sets.
However, I strongly suggest you still do all the problems to prepare yourselves for exams.
Solutions will be posted later.
Jan 15 (Mon): Welcome to Math 225 P1!