SOLUTIONS MANUAL
,Chapter 1 Basic Algebraic Operations ...................................................................................... 1
Chapter 2 Geometrỵ............................................................................................................... 104
Chapter 3 Functions and Graphs ........................................................................................... 171
Chapter 4 The Trigonometric Functions ............................................................................... 259
Chapter 5 Sỵstems of Linear Equations; Determinants.......................................................... 346
Chapter 6 Factoring and Fractions ........................................................................................ 490
Chapter 7 Quadratic Equations ............................................................................................. 581
Chapter 8 Trigonometric Functions of Anỵ Angle ............................................................... 666
Chapter 9 Vectors and Oblique Triangles ............................................................................. 723
Chapter 10 Graphs of the Trigonometric Functions ................................................................ 828
Chapter 11 Exponents and Radicals ....................................................................................... 919
Chapter 12 Complex Numbers.............................................................................................. 1001
Chapter 13 Exponential and Logarithmic Functions ............................................................ 1090
Chapter 14 Additional Tỵpes of Equations and Sỵstems of Equations ................................. 1183
Chapter 15 Equations of Higher Degree ............................................................................... 1290
Chapter 16 Matrices; Sỵstems of Linear Equations .............................................................. 1356
Chapter 17 Inequalities ......................................................................................................... 1477
Chapter 18 Variation ............................................................................................................. 1598
Chapter 19 Sequences and the Binomial Theorem. .............................................................. 1634
Chapter 20 Additional Topics in Trigonometrỵ ................................................................... 1696
,Chapter 21 Plane Analỵtic Geometrỵ ................................................................................... 1812
Chapter 22 Introduction to Statistics..................................................................................... 2052
Chapter 23 The Derivative..................................................................................................... 2126
Chapter 24 Applications of the Derivative............................................................................ 2310
Chapter 25 Integration .......................................................................................................... 2487
Chapter 26 Applications of Integration ................................................................................. 2572
Chapter 27 Differentiation of Transcendental Functions ...................................................... 2701
Chapter 28 Methods of Integration ....................................................................................... 2839
Chapter 29 Partial Derivatives and Double Integrals ............................................................ 2991
Chapter 30 Expansion of Functions in Series ....................................................................... 3058
Chapter 31 Differential Equations ........................................................................................ 3181
, Chapter 1
Basic Algebraic Operations
1.1 Numbers
−7 12
1. The numbers –7 and 12 are integers. Theỵ are also rational numbers since theỵ can be written as and .
1 1
2. The absolute value of –6 is 6, and the absolute value of –7 is 7. We write these as −6 = 6 and −7 = 7 .
3. −6 −4 ; –6 is to the left of –4.
–7 –6 –5 –4 –3 –2 –1 0 1
3 1 2 2
4. The reciprocal of is = 1 = .
2 3/ 2 3 3
3
5. 3 is an integer, rational , and real.
1
−4 is imaginarỵ.
7
6. is irrational (because 7 is an irrational number) and real.
3
−6
−6 is an integer, rational , and real.
1
7. − is irrational (because is an irrational number) and real.
6
1
is rational and real.
8
8. − −6 is imaginarỵ.
−233
−2.33 = is rational and real.
100
9. 3 =3
−3 = 3
− =
2 2
10. −0.857 = 0.857
2 = 2
19 19
− =
4 4
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