## Friday, January 29, 2010

### 21-241: Homework #2 Solutions

The solutions to Homework #2 are now available on the Blackboard site.

## Thursday, January 28, 2010

### 21-241: Week #4

## Wednesday, January 27, 2010

### 21-241: Homework #1 Solutions

The solutions to Homework #1 are now available on the Blackboard site.

## Thursday, January 21, 2010

### 21-241: Week #3

## Friday, January 15, 2010

### 21-241: Week #2

The assignment for Week #2 has been posted. Note that the assignment is due on Wednesday, January 20.

## Thursday, January 14, 2010

### 21-241: Using Tecnology

I've been asked about the use of technology (graphing calculators, computer algebra systems) on your homework assignments. I don't place any restrictions on the use of these tools. As you use them, however, you need to bear in mind a few things:

- The goal of the course (and homework assignments) is for you to learn techniques, not "get answers." If a question requires you to solve some system of equations, using Maple's 'solve' command will not get you any credit. You can, however, use commands that make Maple perform the various operations, just as if you were doing them on paper.
- As you work on your assignments, bear in mind that you will not have access to a calculator on the exams. Don't come to rely too heavily on technological approaches.
- At the same time, some homework problems
may assume that youdo have access to a calculator. If a problem requires you do divide 12.983 into 137.98372423, don't worry about how you would do that on the exams. Just get out your calculator and do it.

### 21-241: Office Hours

My office hours this semester will be on Tuesdays, from 2:00-4:00pm, in WEH 6214. Additionally, our TA, Timothy Naumovitz will hold several office hours: Mondays from 6:30-7:30 and Thursdays from 10:30-11:30, both in WEH 6215. He will also hold a "recitation-like" homework review session on Tuesday evenings, 9:00-10:00pm, in a room yet to be determined.

As announced in class, I'll be holding office hours on Thursday this week starting at 2:00. I said I'd be here until four, but I'll actually need to leave a little earlier than that - say 3:45.

As announced in class, I'll be holding office hours on Thursday this week starting at 2:00. I said I'd be here until four, but I'll actually need to leave a little earlier than that - say 3:45.

## Monday, January 11, 2010

### 21-241: Welcome to Matrix Algebra

Welcome to 21-241 Matrix Algebra. Most information about the course can be found on the Course Website. There is also a Blackboard site for the course, which will be used mainly to record homework grades and provide solutions to exercises and exams.

The homework assignment for Week #1 is now available. It is due on Friday, either before or after class, or in your TA's mailbox before 3:20.

The homework assignment for Week #1 is now available. It is due on Friday, either before or after class, or in your TA's mailbox before 3:20.

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