Math 309 Homework, Spring 2013
Homework #1, due Wednesday January 23. Solutions ; the solution of problem 2 there contains arithmetic mistakes: the right answer should be (1,2,-2,1,-1), see corrected solution of problem 2 ;
Homework #2, due Wednesday January 30. Solutions;
Homework #3, due Wednesday February 6 (the submission is postponed to February 6) Solutions; the
solution of problem 5 there contains an arithmetic mistake (from the
beginning in (3,3) entry of the marix A it is used 2 instead of -2: the
right answer should be (1,1,2), see corrected solution of problem 5;
Homework #4, due either Friday February 15 with stimulus of an additional 5%
of the grade or Monday February 18 without this stimulus (for more detailed explanations see the Class Announcements of Wednesday, February 13). Solutions (Correction: on page 5 there in the middle 1(a) is 1(c); Remark: in problem 10 you also can argue that axion A6 fails)
Homework #5, due Monday February 25 with stimulus of an additional 10%
of the grade or Wednesday February 27 without this stimulus (for more detailed explanations see the Class Announcements of Friday, February 22) Solutions
Homework #6, due Wednesday, March 5. Solutions were sent to you by email on Wednesday, March 6. (Correction:
on page 3, problem 4 (exercise 13, p. 160) of the book it should be :
(1,2,1)^T is a particular solution of Ax=b=>
(1,2,1)^T+C_1(1,1,2)^T+C_2(1,0,-1)^T is the general solution of
Ax=b)
Homework #7, due Wednesday, March 20. Solutions
Homework #8, due Wednesday, March 27 Solutions were sent to you by email on Wednesday, March 27.
Homework #9, due Monday, April 8. Solutions
Homework #10, due Friday, April 19. Solutions were sent to you by email on Sunday, April 21
Homework #11, due Wednesday, April 24. Solutions
Homework #12, bonus
homework. Material for the first two problems is included in the final.
Submit it on Friday, May 3 2013 between 10 a.m.-13 p.m. to my office,
Milner 324, or slide it under my office door but not later than on the
same day, May 1 2013. Solutions of problems 1 and 2
Homework Policy:
- Homework is to be placed on the table at the
front of the classroom at the beginning of the lecture. No papers will
be accepted after 10 minutes from the beginning of class. If you turn
it in to my office (Milner 324), place it in my mailbox (Milner
130) or e-mail a PDF-version to me, make sure you do it before noon
at due date.
- Homework is to be completed independently.
- Homework
assignments usually will be posted on Wednesdays and due the next Wednesday in the beginning of the class.
- Late
assignments will not be accepted in general, but it may be accepted at
the discretion of the instructor; an early request is more likely to
receive a positive response.
- To get full credit you must
- Staple the homework pages together (I don't
have a stapler in the classroom). Folded or paper clipped homework will
NOT be accepted.
- Write your name and the section number at the top right corner.
- Write the page number at the top right corner of each paper in your assignment.
- Show ALL your work. Just writing the answers down is not enough.
- YOUR WORK MUST BE NEAT, EASY TO FOLLOW.
- Box your final answers.