MATH 1P97 Lecture Notes - Lecture 1: Negative Number, Real Number, Piecewise

• School: Brock University
• Department: Mathematics and Statistics
• Course: MATH 1P97
• Professor: Asselin, Craig

Document Summary

January 7th, 2019: natural numbers - positive whole numbers. 2: rational numbers: any number that can be written in the form where a and b are. Integers 3,- 2, -1, 0, 1, 2, 3 a b. 2 integers, and b 0 ie 3. 1: real numbers: any decimal number at all ie, 2. 13, 0. 5 ~ 3. 14159 . Product of two negative numbers is positive ie (-6)(-3) = 18. Product of one positive one negative number is negative ie (6)(-3) = -18. Fractions a+ c b+ d (a)(d)+ (c)(b) (b)(d) ad bc a b d c ad bc a b c d c d a b a b c d. Inequalities: a < b a is less than b, a > b a is greater than b, a =< b a is less than or equal to b, a >= a is greater than or equal to b. * multiplying both sides by negative number switches the inequality.