Day 16, Mat119: Pre-Calculus

• Homework pp. 243--, #11, 17, 25, 41
  • #11: you're asked to give reasons. Some good ones:
    • 5th degree and five roots (or zeros)
    • 5th degree and four extrema
    • Some actually found the roots (what are they?), and confirmed it that way.

  • #17: saw some nice cubics, with two extrema
  • #25: this is a 6th degree polynomial, with some multiple roots (which you can actually see in the graph).
  • #41: this cubic has NO extrema (there are two different shapes for the cubic).

• Homework pp. 289--, #13, 17, 41, 54 (sorry, haven't finished with this one yet).

We were going to do some more problems: pp. 440--, #29, 39, 55, 57, 61