Your first midterm will be next Thursday, October 3rd, covering Unit 1 (Systems of Linear Equations) and Unit 2 (Matrix Algebra). You'll need to have access to some tool that can row reduce matrices, like Wolfram Alpha or certain graphing calculators. If you don't have access to such a tool, let me know as soon as possible. You'll also be allowed to bring one 3"x5" index card with notes (front and back).
Keep in mind that you'll have the chance to correct your midterm for up to 1/3 points back. If you score a 70 on the test, you'll be able to bring that up to an 80. I hope that takes the edge off your stress.
Here's my office hour schedule for the next week:
- 9/27 Friday 2-3 (CFT)
- 9/30 Monday 10:30-11:30 and 3-4 (CFT)
10/1 Tuesday 4-5 (CFT)
- 10/2 Wednesday 1:30-2:30 (CFT) and 4-5 (FGH 200)
Some resources for you to use as you study:
Here's an updated version of the Invertible Matrix Theorem, reflecting what we've covered in Units 1 and 2.
Now that we've finished Unit 1 (Systems of Linear Equations) and Unit 2 (Matrix Algebra), here are all the Unit 1 and 2 clicker questions. Answers are on the final page.
Below are a list of suggested practice problems from your textbook for you to work through as you study for the upcoming midterm. Note all of these problems have answers in the back of the book, unfortunately, but I would encourage you to ask and answer questions about these problems on our Piazza board.
- Section 1.1 #3, 10
- Section 1.2 #1, 2, 3, 6, 7, 13, 14, 15, 17, 21
- Section 1.3 #1, 3, 5, 8, 9, 10, 11, 13, 14
- Section 1.4 #7, 12, 13, 16, 19, 21, 24, 25, 31
- Section 1.5 #1, 2, 3, 5, 7, 8, 10, 12, 16, 18, 19(a), 29, 30, 31
- Chapter Test A (p. 81) #1, 2, 3, 4, 10, 11, 12
- Section 3.3 #2, 3, 6, 18
- Section 6.3 #22(a, c), 24
Here's your fifth problem set, due Thursday, September 26th, at the start of class.
Here are solutions to Problem Set 3. Let me know if you have any questions about them.
We worked through a lot of clicker questions in class yesterday, so here's an updated list of clicker questions (with answers) thus far.
Here's your fourth problem set, due at the beginning of class on Thursday, September 19th.
If you're interested in checking out the Twitter bots I mentioned in class the other day, here are some links:
- @KarlMarxovChain - A Markov bot that uses the writings of philosopher Karl Marx
- @autoblake - A Markov bot that uses the writings of poet William Blake
- @BabbageBot - The Markov bot I created that uses the writings of scientist Charles Babbage
- @TwoHeadlines - This bot randomly puts together two current news headlines.
- @NSA_PRISMbot - This bot randomly generates fake NSA surveillance reports.
- @RemixMyProf - This bot takes actual tweets that include the phrase "my professor" and replaces "professor" with a randomly chosen medical professional (or "4th grade teacher").
- @WhitmanFML - This bot takes actual tweets that include the hashtag "#FML" (look it up, if you don't know what it stands for) and concatenates them with lines from Walt Whitman's poetry, joining the two pieces of text at the word "and."
For more information on Markov bots, see this short article. For some code you can use to create your own Twitter bots, see Roger Whitson's code on GitHub and this tutorial from Al Sweigart.