To Do for Fri, Mar 1

  • If you haven’t already, compare your quiz with solutions.
  • Convince yourself, with the sum of geometric series, that 1 + 1/2 + 1/4 + 1/8 + … = 2. (We’ll use this in class Friday.)
  • Watch this Mathologer video about approximating numbers with rationals. (Forgive him for his weird obsession with Fibonacci numbers.)
  • Use the rest of your 45 minutes for any catch-up things you might need.
  • Reminder that MONDAY will be a Sage Workshop in BESC 385.
  • Friday’s class will be very important material (modular arithmetic done right).
  • UPDATE: Thursday office hours are cancelled due to illness.
  • THIS JUST IN: I corrected the statement of the homework problem on commensurability on the Homework page.