Test One = 1 = 0001 = I *Know basic facts from the handout on the history of numbers, but especially: +Roman Numerals +Number System (definition/explanation) +Positional Number System (definition/explanation/what does "positional" mean here) +Algorithm (definition/explanation) +Questions on Handout *Know how to do the conversions we discussed in class. 2 <-> 10 2 <-> 16 5 -> 10 +Know how to follow this map around and do sequences of conversions. The website I linked to should be helpful practicing this. +Helpful in doing this material is to know the table that I gave on the second homework. This let's you quickly convert between the numbers 0-15 in base 10, base 2, and base 16. *Know general facts about the positional number systems and grouping: +If we use base "B" how many digits will we use? +What are the different place values worth in base "B" *Know the symbols for the different sets of numbers and which numbers are in each. + R - reals + Q - rationals + Z - integers + N - naturals *Know the statements of the pythagorean theorem (handout) and the irrationality of the square root of 2. +Hint: The second one is easy: "The square root of two is irrational" *Know the idea behind proof by contradiction. *Know the decimal representation of real numbers and how to convert back and forth between rationals. *Know any other definitions that I gave in class.