Pre-calculus Notes Chapter P.

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Presentation transcript:

Pre-calculus Notes Chapter P

Real Numbers A real number is any number that can be written as a decimal The set of real numbers include many subsets: Natural Whole numbers Integers Rational Numbers Irrational Numbers

The set of real numbers is ordered. Inequalities will be used to compare real numbers . Inequality symbols are:

Graph of inequalities Describe and graph the interval of real numbers for the following inequalities: a) x<3 b) -1<x ≤ 4 Try it out p9#5,6 X ≤ 2 -2≤x<5

Write an interval of real numbers using an inequality and draw its graph a) The real numbers between -4 and -0.5 b) The real numbers greater than or equal to 0

Try it out Page 9 # 15-16 15) x is between -1 and 2 16) X is greater than or equal to 5

Bounded vs Unbounded Intervals

Converting between Intervals and Inequalities [-6,3) (-∞,-1) -2 ≤x< ≤3

Try it out Page 10#29 (-3,4] Homework page 9: 7 through 14, 17 through 28 Page 10: 30,31,32