MATH 157 Lecture Notes - Cartesian Coordinate System, Quadratic Formula, Precalculus

• School: Simon Fraser University
• Department: Mathematics
• Course: MATH 157
• Professor: Petra Menz

Document Summary

Real number line x-axis coordinate point origin positive direction negative direction. Absolute value: the absolute value of a number a is. 0 denoted by a and is defined by. Absolute value properties: if a and b are any real numbers, then a. Ab a a b if a if a a b. A b a b n a na a a. Distance between two numbers: the distance between any two real numbers a and b is given by __________. _______), where a is any real number called the ____ and the superscript n is a positive integer called the ________. Fractional exponent: denotes the n-th _______ of a, where a and n are positive. Laws of exponents: if a, b, m and n are any real numbers and the expressions are defined, then. 1/ na is defined as a and a b m n n a. 1/ a n a m n n n m a m n a.