Day 09 in Mat121

Today:

• Visit from Shelley Cain, re support
• Roll
• Quiz today, over material from chapter 2 through 2.3
• Check out the course textbook website
• Hand out directed reading handout, Section 2.7 (html) (pdf)
• Quiz next Tuesday, over sections 2.4-5
• Test next Thursday, over chapters 1 and 2
• A love poem

• Section 2.4: Limits and Continuity (cont.)
  • Examples:
    • #77, p. 73
    • I learned something about our atmosphere:
      • Figure 13
      • The Thermosphere is where the shuttle flies....
      • Temperature over the Antarctic, summer and winter

  • Questions over the Directed reading handout, Section 2.4 (html) (pdf)?

• Section 2.5: Evaluating Limits Algebraically
  • What's the big idea? Indeterminate forms cause trouble.

    Strategy: transform f(x) algebraically if possible into a new expression that is defined and continuous at x=c and then evaluate by substitution.

  • Examples
    • 1, p. 77
    • 3, p. 77
    • 20, p. 78
    • 32, p 78

  • Questions over the Directed reading handout, Section 2.5 (html) (pdf)?