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Reminder: This class will meet on Friday in room 420 of the Fretwell building.
A representative of computer services will help you access your Eudora account.
You will need a 3 1/2 diskett for that class meeting. Come to my office before class
to buy one for 50 cents or borrow one from a friend. Also, expect a quiz
on Friday.
In the lecture we talked a little more about absolute value,
then about whle number, fractional and negative exponents.
1. The need for numbers. Our number systems have grown as the need for
new numbers grew. Cave men had only two numbers, few and many.
Irrational numbers were `invented' to solve equations like
x times x-2=0.
2. Exponents and radicals. The meaning of exponential notation.
3. The need to distinguish two aspects of number. Each
(real) number has a value, and a representation (in fact each number has many
representations). When we say two numbers are equal, we mean they
have the same value.
4. The real number system. This will have to wait until the third
lecture.
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