Math 125: Week 4
| Week 3 outline | Math 125 main page | Week 5 outline |
| What | Where | Link |
|---|---|---|
| Reading | Text -- 6.2, 6.3 | |
| Worksheet | none | none |
Student Guide:
Sections 6.2 and 6.3 cover methods of computing volumes. A general "slicing" method is introduced in section 6.2 -- as well as a subcategory of solids called solids of revolution. It is useful to practice visualizing these 3D solids. In section 6.2, the "slicing" method applied to solids of revolution is called "Disks/Wahers" (according to the shape of the cross-sections).
This is the week of Exam #1. Depending on the quarter and the pacing of your instructor, the material covered on the first midterm will vary and may cover up to (and including) section 6.2 or 6.3. Ask your instructor for precise information on the sections covered. Keep this in mind as you look over old midterms in the archive -- some of the questions in the archive may have to do with later topics from section 6.3 (shells), or even 6.4 (work)
The exam will be given during your quiz section time on Thursday. Many instructors devote one lecture period to an in-class review session, the day before the midterm.
If section 6.3 was not covered before the midterm, it will be covered on the last lecture of the week on Friday. Section 6.3 presents an alternative method for computing volumes of solids of revolution, via dividing them into concentric very thin cylindrical "shells". This allows us to set up the Riemann Sums and thus the volume integrals in the opposite variable than the slicing disks/washers method, which can be important, depending on the situation.
There is no worksheet this week.
| Week 3 outline | Math 125 main page | Week 5 outline |