A Refresher Course in Mathematics - Talking Electronics
FRANK WERNER
A REFRESHER COURSE
IN MATHEMATICS
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ii
A Refresher Course in Mathematics
1st edition
? 2016 Frank Werner &
ISBN 978-87-403-1319-2
Peer reviewed by Dr. Larysa Burtseva, The Engineering Institute of the
Autonomous University of Baja California, Mexicali, Mexico
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A REFRESHER COURSE IN MATHEMATICS
Contents
Contents
1 Some Mathematical Foundations
9
1.1
Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
1.2
Sum and Product Notation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
1.3
Proof by Induction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
2 Real Numbers and Arithmetic Operations
25
2.1
Real Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
2.2
Basic Arithmetic Rules and the Absolute Value . . . . . . . . . . . . . . . . . . .
26
2.3
Calculations with Fractions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
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A REFRESHER COURSE IN MATHEMATICS
Contents
2
CONTENTS
2.4
Calculations with Powers and Roots . . . . . . . . . . . . . . . . . . . . . . . . .
34
2.5
Calculations with Logarithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37
3 Equations
43
3.1
Linear Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
44
3.2
Quadratic Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
51
3.3
Root Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
56
3.4
Logarithmic and Exponential Equations . . . . . . . . . . . . . . . . . . . . . . .
59
3.5
Proportions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
65
3.6
Approximate Solution of Equations . . . . . . . . . . . . . . . . . . . . . . . . . .
67
4 Inequalities
71
4.1
Basic Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
71
4.2
Linear Inequalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
73
4.3
Inequalities with Absolute Values . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
4.4
Quadratic Inequalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
79
4.5
Further Inequalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
87
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