Being a weblog devoted to a variety of topics. Including Mathematics. And Mathematical Finance. Sometimes with homework.

Tuesday, September 23, 2014

21-241: Week #5 Online Assignment

One of the problems I'd included on this week's WeBWorK assignment (Problem 7) was not being scored correctly. I was not able to fix the problem, so I removed it from the assignment. When you look at it now, you will see there is no Problem 7. It jumps form Problem 6 to Problem 8. Do not be alarmed!

Thursday, September 11, 2014

21-241: Lecture 7

On Wednesday, September 10, we discussed the "Geometry of Linear Systems of Equations." I devoted a significant amount of time to discussing the "Row Picture" and the "Column Picture." This terminology does not appear in our textbook. I found these ideas in a previous semester when we used Linear Algebra and It's Applications by Gilbert Strang as the textbook. This book is being used by another instructor this semester, so copies are floating around. The topics I discussed are in Section 1.2 of that book.

21-241: Lecture Notes

I've fallen a little behind in the lecture notes, but notes through Friday, September 5, are available on the Blackboard site.

21-241: Lectures 4 and 5 - Logic

As you have seen, I referred you to this Introduction to Mathematical Arguments for our two lectures on logic and proof. I wanted to point you toward this additional resource for another view of the subject.