### Updates/Revisions to the Math 252 Course Webpages

• I've modified the timeline to add an extra online session for Section 6.2. See the Study Plan below (or the Pacing Schedule on the About page) for details.
• DX02 (Mech): Test 3 has been moved to the following week. The DX01 (Civil) section writes on the original date. Please note that the sections covered have changed. See the Tests page for details.

### Links to other Math 252 Sites

• You can find more resources on the Math 252 websites for the following Camosun instructors:
• (You'll find some redundancy because we do share resources.)

### Study Plan

#### Week 2: Jan 18 to Jan 22

• Section 2.3: Linear Equations
• Section 2.5: Solutions by Substitutions (we're doing this section before 2.4)
• WeBWorK Assign1, which is due the following week

#### Week 4: Feb 1 to Feb 5

• Finish up 3.1.
• Test 1 covers the material up to this point.

#### Week 5: Feb 8 to Feb 12

• Test 1 is tentatively scheduled for Wednesday of this week.

#### Week 6: Feb 15 to Feb 19

• This week is Reading Week.

#### Week 8: March 1 to March 5

• Section 5.1: Linear Models: Initial-Value Problems
• My lecture notes
• Review: Gilles' handout on Linear combination of Sine and Cosine
• A student asked me what it would look like if you had damped oscillation plus an external force which is sinusoidal but with a slightly different frequency. As we've seen, damped oscillation looks like this. Undamped oscillation plus an external sinusoidal force can give a beat frequency. Damped oscillation with beats can look something like this (depends on the constants), but as you can see there is an initial "beat" state, which decays away until only the steady state solution (from the external force) is left.

#### Week 9: March 8 to March 12

• Section 6.1: Review of Power Series
• Section 6.2: Solutions about Ordinary Points
• Test 2 is tentatively scheduled for this week or next: DX02 writes this Friday and DX01 writes the following Thursday.

#### Week 13: April 5 to April 9

• Test 3 is tentatively scheduled for this week or next: DX01 writes this Tuesday and DX02 writes the following Tuesday.

#### Week 14: April 12 to April 16

• Finish up 8.2.
• We will omit 8.3. If you'd like to see the lecture notes, please email me. I'm happy to go over them with you in office hours.