Day 10 in Mat115

Today:

• I've scanned in my solutions from the first problem set, if you'd like to see what I consider perfectly acceptable:
  • page 1
  • page 2
  • page 3
  • page 4

• Return 2.1 problems

• Questions/Comments on old stuff?

• Section 2.4:
  • Helpers: Christy and Michelle

  • Crazy Clocks (modular arithmetic)

  • UPCs - Christy notes:

    Here is the website I visited to find out more about UPC bar codes. If you cruise the table of contents in the middle of the page, it also has links to pages that teach the secrets behind bar codes and how to expand the shortened bar codes.

    http://electronics.howstuffworks.com/upc.htm

  • Homework Problems from section 2.4: I, #2, 11, 14; II, #7; III, #3.

Next time: Problems Pause