Day 23 in Mat122

Last time: Section 6.4

Next time: Section 7.1

Today:

6.3 homework due
6.4 homework due Tuesday
Directed reading handout: Section 7.1 (html) (pdf)
On integrating from a to b, when a < b
- by interpretation of dx
- by u-substitution
Section 6.5: Work
- -- reminiscent of the dirt formula, d=rt
- Examples:
  - #2, p. 338
  - #3, p. 338
  - #11, p. 338
  - #15, p. 338

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