**Announcements**

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You are expected to check for new announcements every day.

**Dec 22 **Course scores are computed on these assumptions: 6
equal assignments count 55%, the midterm counts 15%, and the final counts 30%.
Based on that, the median course score is 84/100.

**Dec 22 **The Take-Home Final is graded. Median = 39/50.
Here are solutions: P1 (8.44),
P2 (8.68), P3
(6.14), P4 (6.61), P5
(9.55). Each problem was worth 10 points and the averages are given in
parentheses. The exam contributes 30% to your course grade.

**Dec 7 **The display of Q_33 has a typo. The two alphas in
row 5 should be moved up to row 4.

**Dec 6 **The Take-Home final is
ready.

**Dec 4 **THE IN-CLASS FINAL SCHEDULED
FOR DEC 17 IS CANCELLED. There will still be a take-home final and
its weight is doubled to 30% of the course grade. The take-home will be posted
in a day or two and will be due on December 17.

**Nov 20 **Problem 2 in A6 has been slightly modified. Please
download the handout for details.

**Nov 18 **Assignment A6 is
ready.

**Nov 9 **The 4th problem in
A5 has been revised. Here is the new handout. And there is a P4 test script
here.

**Nov 5 **Assignment A5 is
ready.

**Nov 2 **The midterms are graded. Here are some
notes. And here are the test
scripts/solutions: P1, P2,
P3. Do not hesitate to ask for more grading comments
than what was provided on CMS. The exam contributes to 15% of your course grade,
about the same as 1.5 assignments.

**Oct 30 **A4 is graded**.**

**Oct 26: NO CLASS WEDNESDAY OCTOBER 28**

**Oct 26. **The Take-Home midterm is
available. It is due Friday, Oct 30, at 6pm.

**Oct 12 **A3 is graded and
A4 is available

**Oct 7 **The "nnz inequalities" on page 4 need to be
slightly revised:

nnz(L,-1) <= nnz( tril(A,-1) ) + np

nnz(M,-1) <= nnz( triu(A,1) ) + nq

**Oct 6 **Typo in A3 Prob 1. In th espec for HermFactor, the
subdiagonal of A is g+i*h, not c+i*e

**Oct 1. **The finished A3 is
available, The due date has been moved from Wednesday Oct 7 to Friday October 9.

**Sept 28 **A2 Graded and the
first half of A3 is available.

**Sept 17 ** missing "L" in 5th displayed equation on
page 1. Should be (L+I)x_2 = b_2 - L*(L_21*x_1). Also, in problem 2, don't
confuse the "U" in the Sherman-Morrison-Woodbury formula with the "U" in the LU
factorization.

**Sept 16 **Assignment 2 is ready to
go.

**Sept 15 **The final exam date is fixed: Thursday, December
17, 9-11:30 AM.

**Sept 14** A1 is graded and you can see your scores
and comments via CMS. Solutions and averages are here.
A few remarks with an eye towards subsequent assignments. (1)
Include specifications for all functions and subfunctions. (2) You do not have
to include code that gracefully handles bad input. Thus, if an input parameter
is to be a symmetric matrix, then you do not have to check for that property.
(3) Because it disrupts the grading process, your submitted functions should not
produce debugging output.

**Sept 8 **Two comments on A1.First, it should be 6n^3 not
6n^2 in the last paragraph on page 1. Second, there are usually different ways
to solve a given problem. You will generally get full credit for a
working method unless your method requires more work or storage by an order of
magnitude or if it is only efficient for a small subset of "nice" inputs.

**Sept 4 **The final A1 handout and associated m-files are
here.

**Sept 3. **To solve the registration problem once and for
all, students who do not submit solutions for A1 at the time it is due will be
dropped from the course to make room for those who are being blocked by the
registrar. I believe there is plenty of room for all interested students so I
fully expect that this "tough guy" approach will not really be an issue!

**Sept 3. **All students who put their name on the sign-up
sheet are now in the CMS system. If you click on the CMS link
here then you can proceed to upload your solution
files. Note: the most recent upload is what I see. So it would be worth
practicing the upload procedure well in advance of the A1 due date just to make
sure all is well. If you are not in the CMS system then send me a note with your
netID and I will put you in.

**Sept 2. **Assignment 1 is (mostly) available
here. There will be a fourth problem posted
after Friday's lecture on Haar wavelets. CMS will be set up in a few days so
that you can submit your solution m-files.

**August 26. **At the first class were 34 students who have
registered and 11 students who have not registered. The room holds 41 and that
is our limit unless we move to a larger room. (Not easy since MWF 11 is "prime
time".) However, given normal drop rates I am confident that everyone will be
accommodated. So come to class and my guess is that by Monday all will be fine.