POSTED Dec. 5: Graded HW4 can be found outside my door later this week. HW 4 solutions will be posted later this week.
POSTED Nov. 30: SAMPLE FINAL is posted: see under ``sample exams.''
POSTED Nov. 30: BONUS hw5 is now posted under ``homeworks'' Although it is not compulsory to turn in Homework 5 (except if you want bonus points), I would nevertheless strongly suggest that you work on it carefully, since it is the only way you get to understand the material of Chapter 8.
POSTED Nov. 28: I will post a BONUS Homework 5, and a Sample Final by Thursday. Although it is not compulsory to turn in Homework 5 (except if you want bonus points), I would nevertheless strongly suggest that you work on it carefully.
POSTED Nov. 21: For the first homework problem, assume the input is the appropriate triangular part of the vandermonde (take the full vandermonde for the remaining problems).
POSTED Nov. 15: For the first homework problem, try to ensure that your algorithm for inverting a triangular matrix runs a factor faster than the obvious O(n^3) algorithm.
POSTED Nov. 13: The current letter grades (after HW3) are now posted.
POSTED Nov. 13: HW4 is now posted. See under Homeworks.
POSTED OCT 29:
I just corrected a potentially confusing typo in the OCT 26 announcement:
For those of you who missed the lecture where I gave the
expression for the integral of the nth degree BB poly piece
with coeffs b_0...b_n, over the interval (alpha, beta).
It is: (beta-alpha)/(n+1) * (sum [i =0:n] b_i).
I think m is used for the number of pieces in the interpolant
in the homework.
How did I arrive at this expression?
Note that you have already derived the expression for the derivative of
a BB piece in HW2.
The integral of the derivative should give you the
original poly. That's one way to arrive at it.
POSTED Oct 19 (5 pm): HW3 is now posted under Homeworks/Homework sets. It is due Oct. 31.
POSTED Oct 19: Post midterm letter grades are posted. See under grades.
POSTED Oct 19: Midterm solutions are posted. See under Exams/Solutions for instructions on how to access them through your cise account.
POSTED Oct 8: For those of you who missed this announcement in class and on the sample exam: the midterm will be open book/notes.
POSTED Oct 8:
For a short time, solutions (HW and sample midterm) are posted
here.
After the midterm this weblink will be removed but you can
still continue to access them (as usual) as explained
under Homeworks/Solutions or under Exams/Sample solutions,
through directory access on the cise system, or remotely via
ssh.
This precaution is being taken by instructors everywhere,
to prevent easy access to solutions by students at other universities.
The /cise/class directories are provided by our department
for precisely this purpose. All previous numerical
computing instructors have used this facility (as opposed to the web)
for posting solutions.
POSTED Oct 6: Graded HW2 can be picked up either from 2-4 on Monday Oct. 9 during the TA Andrew Lomonosov's office hours, or after that in front of my office door Rm 326 CSE bldg.
POSTED Oct 3: --HW2 solutions are posted. See under ``Homeworks/Solutions'' in the course webpage for instructions on how to get them.
--Sample midterm solutions are posted. See under ``Exams/Sample solutions'' in the course webpage for instructions on how to get them.
POSTED Sep. 29: Sample midterm is now posted. Look under ``Exams'' in the course webpage.
POSTED Sep. 28:
HW2 problem 4 illustrates the instability (non-locality)
of the univariate cubic spline interpolant which is extremely sensitive
to how the 2 available degrees of freedom,
i.e, derivatives of the first piece at the left end point
are fixed. While it is true that however you choose them, you
will always get a cubic spline interpolant,
they have to be chosen quite carefully
to prevent coefficient blow-up, and for some input values, coefficient
blow up cannot be avoided.
For this reason, for your hardcopy plot,
1) you have to scale the y axis so that the plot is intelligible
2) you should try to choose the 2 degrees of freedom, say the values
of the 2 derivatives of the first piece, carefully.
3)
you also have to carefully choose the input values to be interpolated
so that you get a reasonable picture --just don't choose them
to be all constant.
POSTED Sep. 26:
----HW2 due date postponed to Oct. 3
---Office hours postponed till after class. HW will be discussed
extensively in class.
POSTED Sep. 21:
HW2 is now posted (3 pm).
POSTED Sep. 19:
1)
NEW homework submission guidelines
posted under ``Homeworks/How to submit'' in the course webpage.
Please read and follow carefully to prevent lost points.
2)
HW1 solutions will be posted
after class today. (THEY ARE POSTED NOW: 3:30 pm)
See under ``Homeworks/Solutions''
in the course webpage for instructions on
how to get them.
POSTED Sep. 14: If you did not submit your homework (mfiles and outputs both in hardcopy and electronic) in the manner specified under ``how to submit'' under ``Homeworks,'' you could be in for an unpleasant surprise in the form of lost points. Please check your email immediately.
POSTED Sep. 14: The HW1 solutions will most likely be posted ONLY NEXT TUESDAY. See ``Solutions'' section under ``Homeworks.''
POSTED Sep. 14: Some instructions on accessing Matlab remotely are now available under the ``setting up your matlab environment'' section of the ``Homeworks'' section.
POSTED Sep. 12: Matlab has run uninterrupted on almost all of the machines in the department--you can ssh to any machine remotely--only telnetting is restricted to rain and sand alone as it is considered insecure.
Apparently a few of the machines (such as rain and sand) in the department what run Solaris 2.6 did not have their license files updated after the last down time. So they would have had intermittent problems with Matlab.
The system people say that this problem has now been fixed. Next time, if you have a problem running Matlab, you should immediately try to run it on a different CISE machine--use ssh instead of telnet if you are remote.
POSTED Sep. 12: Will be in class today by 11:35--will take questions about homeworks before class. Office hours today are postponed till after class.
POSTED Sep. 7: HW1 is posted -- look under ``Homeworks.'' It is due Sep. 14.
POSTED AUG. 28:
The pretest grades are now available under the grades and
grading policies section.
If you received LESS than 19 points on this test, you are not prepared for this
course and if you still decide to take it, you should be prepared to
make up the required background on your own.
POSTED AUG. 24:
The background test and its solutions are posted in the
``prerequisite'' section of the webpage. You can get
an idea of your performance by looking at the solutions.
I am not linking that page here on purpose, to get you to
surf the page.
The graded tests will be handed out on Tuesday.
POSTED AUG. 15:
ONLY IF you do NOT wish your grades etc. to be posted under your ssn, please email me (sitharam@cise.ufl.edu) ASAP an alternate numerical codeword consisting of no more than 6 digits, within the FIRST WEEK of classes. Include your name and your ssn in your message. If I do not hear from you, I will assume that I can post your grades under your ssn.