Monday, September 17, 2007

September 17-23

Feel free to ask questions regarding the week of September 17 - 23, 2007 here by adding a comment to this post.

Don't forget that HW#2 is due on September 20, 2007.

7 comments:

Anonymous said...

I posted a question last week and have not received a response. Anyway, when and where are your office hours, Angelo?

Angelo Cristobal said...

T H 3:15:-4:15 in Broughton 4179. Come on by!

Angelo Cristobal said...

Also Isaac, I just now saw your first question. I did not see it because it was posted as a comment to the "Welcome" post. To receive the most prompt feedback, please post in the current week's post.

Kevin Kennedy said...

With regards to HW2, I have a concern. In both the sample problem in the text and problem 1, the stress state matrix is symmetric. However, in problem 2, it is not; I am wondering if this is intentional. (Tau_zx /= Tau_xz)

NOTE: I plan on asking about this tomorrow during class, but I am curious, and hope for a response here, in the case I should forget about it in the AM!

Angelo Cristobal said...

Just a reminder, the stress matrix for #2 has been changed:

[sigma] =
[ 4 0 -4 ]
[ 0 3 0 ]
[ -4 0 -2 ]

Homework2 is still due this Thursday.

Anonymous said...

To what extent are we allowed to use our calculators to solve determinants, matrix equations, and other things on HW 2 and elsewhere? If I didn't use my calculator to do half of the operations, I'd still be working on this next month.

Angelo Cristobal said...

So long as you can prove that you have a good grasp on what you're doing, use of a calculator is okay to an extent. However, be sure that you take me through the process of your calculations. Restating the problem, then writing an answer isn't enough. For example, in the last homework, someone got a perfect score with 1.5 pages of work... another person got a perfect score with 6 pages of work... yet also, someone had the exact correct answers but didn't show the process and didn't do as well...