Combninatorial Mathematics 2
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Transcript of Combninatorial Mathematics 2
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2 Chapter 2 Solving Recurrences
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Section 2.1 Types of Recurrences 3
2.1 TYPES OF RECURRENCES
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Section 2.1 Types of Recurrences 5
Variable Coef cients
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6 Chapter 2 Solving Recurrences
Fig 2.1.1
Table 2.1.1
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Section 2.1 Types of Recurrences 7
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8 Chapter 2 Solving Recurrences
Some Non-linear Recurrences
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Section 2.2 Finding an OGF 9
2.2 FINDING AN OGF
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Section 2.2 Finding an OGF 11
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12 Chapter 2 Solving Recurrences
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Section 2.2 Finding an OGF 13
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14 Chapter 2 Solving Recurrences
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Section 2.3 Partial Fractions 15
2.3 PARTIAL FRACTIONS
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16 Chapter 2 Solving Recurrences
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Section 2.3 Partial Fractions 17
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18 Chapter 2 Solving Recurrences
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Section 2.4 Characteristic Roots 19
2.4 CHARACTERISTIC ROOTS
Characteristic Equation
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Section 2.4 Characteristic Roots 21
Alternative Initial Values
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22 Chapter 2 Solving Recurrences
Repeated Roots
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Section 2.4 Characteristic Roots 23
Non-homogeneous Equations
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24 Chapter 2 Solving Recurrences
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Section 2.4 Characteristic Roots 25
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Section 2.4 Characteristic Roots 27
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28 Chapter 2 Solving Recurrences
Complex Roots
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Section 2.4 Characteristic Roots 29
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30 Chapter 2 Solving Recurrences
2.5 SIMULTANEOUS RECURSIONS
Fig 2.5.1
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Section 2.5 Simultaneous Recursions 31
Fibonacci Rabbits
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32 Chapter 2 Solving Recurrences
Ubiquitousness of the Fibonacci Seq
Fig 2.5.2
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Section 2.5 Simultaneous Recursions 33
Fig 2.5.3
Solving the Fibonacci Recurrence
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34 Chapter 2 Solving Recurrences
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Section 2.5 Simultaneous Recursions 35
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36 Chapter 2 Solving Recurrences
Some Tiling Problems
Fig 2.5.4
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Section 2.5 Simultaneous Recursions 37
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38 Chapter 2 Solving Recurrences
2.6 FIBO NUMBER IDENTITIES
Forward-Shift and Subscript Multipliers
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Section 2.6 Fibo Number Identities 39
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40 Chapter 2 Solving Recurrences
Cassinis Identity
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Section 2.6 Fibo Number Identities 41
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Section 2.6 Fibo Number Identities 43
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44 Chapter 2 Solving Recurrences
2.7 NON-CONSTANT COEFFICIENTS
A Reduction Strategy
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Section 2.7 Non-Constant Coef cients 45
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46 Chapter 2 Solving Recurrences
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Section 2.7 Non-Constant Coef cients 47
Sum in a Recurrence: Quicksort
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Section 2.7 Non-Constant Coef cients 49
Analysis of the Time to Quicksort
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50 Chapter 2 Solving Recurrences
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52 Chapter 2 Solving Recurrences
Con rming Small Cases
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Section 2.8 Divide-&-Conquer Relations 53
2.8 DIVIDE-&-CONQUER RELATIONS
Binary Search
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54 Chapter 2 Solving Recurrences
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56 Chapter 2 Solving Recurrences
Algorithm 2.8.1:
Analysis of the Time for a Binary Search
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58 Chapter 2 Solving Recurrences
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60 Chapter 2 Solving Recurrences
Recursive Mergesort
Algorithm 2.8.3:
Analysis of the Time or a Mergesort
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Section 2.8 Divide-&-Conquer Relations 61
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62 Chapter 2 Solving Recurrences
The Josephus Recurrence
Fig 2.8.1
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Section 2.8 Divide-&-Conquer Relations 65
Fig 2.8.4
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66 Chapter 2 Solving Recurrences
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Section 2.8 Divide-&-Conquer Relations 67