# L01 - MAC 1147 Precalculus INSTRUCTOR OFFICE OFFICE HOURS...

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MAC 1147, Precalculus INSTRUCTOR OFFICE OFFICE HOURS PHONE E-MAIL COURSE WEBSITE www.math.uﬂ.edu/ huang/MAC1147.html TEXTBOOK Precalculus with Limits, 2nd edition, by Larson ONLINE HOMEWORK http://www.webassign.net/

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LECTURE PARTICIPATION QUIZZES EVENING EXAMS FINAL EXAM No Calculators are allowed for any of the quizzes and exams. GRADE Check your grade at E-Learning, https://lss.at.uﬂ.edu/ at least once a week. We will NOT review disputed points at the end of semester.
Lecture 1: Section A.1 Real Numbers and Their Properties Real Numbers: Real Numbers u1D445 Rational Numbers u1D444 u1D444 = uni007B.alt02 u1D45D u1D45E u1D45D and u1D45E integers, u1D45E = 0 uni007D.alt02 Integers u1D44D u1D44D = { . . . , 2 , 1 , 0 , 1 , 2 , . . . } Irrational Numbers u1D43C u1D43C = { u1D465 u1D465 not rationals } ex. Rational numbers: 1) fractions and integers: 1 5 , 2 7 , 0 , 3 2) finite decimals: 0 . 15 , 2 . 18 3) infinite repeating decimals: 0 . 2 , 1 . 2 75 ex. Irrational numbers: infinite nonrepeating decimals: 2 , 3 4 , u1D70B, u1D452, 1 . 010010001 . . .

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Real Number Line Every real number can be represented graphically as a point on the real number line. 0 ex. Order the numbers by placing the appropriate inequality symbol ( < or > ) between the pair of real numbers. Plot them on the real number line first. 1) 2 7 5 0 2) u1D70B 1 . 5 0
Intervals Interval Inequality Graph Notation Notation [ u1D44E, u1D44F ] a b ( u1D44E, u1D44F ) a b [ u1D44E, u1D44F ) u1D44E u1D465 < u1D44F a b ( u1D44E, u1D44F ] u1D44E < u1D465 u1D44F a b [ u1D44E, ) u1D465 u1D44E a ( u1D44E, ) u1D465 > u1D44E a ( −∞ , u1D44F ] u1D465 u1D44F b ( −∞ , u1D44F ) u1D465 < u1D44F b (

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