Math 233: Elementary Linear Algebra


Here are some applets that you can play around with to help you visualize vector addition, dot products, cross products, projections, and vector spans:

2D vector addition

3D vector addition

3D vector addition of 4 vectors

2D projectsions, dot products, and cross products

3D cross products (with applet slider)

3D cross products (with more applet controls)

3D linear combinations of vectors

3D spans of 2 vectors

Office Hours:

All office hours will be held in my office, 326C South Hall. My office hours are at the following times, and by appointment.

Mondays: 2:30-3:30pm

Wednesdays: 1:30-2:30pm (Note: this office hour is primarily for ELA students)

You can also get free drop-in help at the Mathematics Learning Center, which is open every day

I expect most special appointments to be close to exams, and I will advertise most special appointments to the whole class as an extra office hour.

Everyone can benefit from office hours, and in fact the best students come to them to ask deeper questions.

Feel free to drop by and just hang out, though it is best to come with a list of questions. Its best to use your homework to figure out what types of problems you have trouble with and to isolate which part of the problems are causing that trouble. When working on your homework, I recommend (1) writing down the problems you don't understand, (2) going back and looking for common characteristics of these problems, (3) grouping them into problem types, (4) re-attempting the problems with your newfound knowledge, and finally (5) coming to me with well-thought out questions.


For a copy of the syllabus which was handed out on the first day of class, click here. This syllabus includes the schedule of all exams and quizzes for the semester.

Webwork homework:

Most homework for this course will be done via the online webwork system. To log on, go to this site and log in with your username and password.

I suggest you do the tutorial first, to understand how to input answers into the system.

Quiz & Exam solutions:

Quiz 1, page 1
Quiz 1, page 2

Quiz 2

Midterm Exam 1

Quiz 3

Quiz 4

Midterm Exam 2

Quiz 5


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