1 n +1 k=0 n n(n+1) 2 2 k=0 n 3 E k2 n(n+1)(2n+1) 6 k=0

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.2: Arithmetic Sequences
Problem 41E
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34
Difference Equations
TABLE 1.2:
Definite Sums of Selected Functions
Number Summation
Definite Sum
1
Σ1
n +1
k=0
n
2
k
n(n+1)
k=0
n
3
п(п+1)(2п+1)
k=0
E k3
n?(n+1)²
4
k=0
E k(m), m # –1
(n+1)(m+1)
т+1
k=0
[a(п+1)+b(т+1)_ь(m+1)
а(m+1)
n
6
E (ak + b)(m), m + -1
k=0
n+1_1
7
Σ α, α1
а—1
k=0
Itu
(а-1)(п+1)а"+1-а'
n+2
+a
E kak, a + 1
(а-1)2
k=0
п
E sin(ak), a + 2mT
cos{a[(n+1)/2]} cos(an/2)
sin(a/2)
9
k=0
n
Σ cos(ak), a # 2mπ
sin{a[(n+1)/2]} cos(an/2)
sin(a/2)
10
k=0
Transcribed Image Text:34 Difference Equations TABLE 1.2: Definite Sums of Selected Functions Number Summation Definite Sum 1 Σ1 n +1 k=0 n 2 k n(n+1) k=0 n 3 п(п+1)(2п+1) k=0 E k3 n?(n+1)² 4 k=0 E k(m), m # –1 (n+1)(m+1) т+1 k=0 [a(п+1)+b(т+1)_ь(m+1) а(m+1) n 6 E (ak + b)(m), m + -1 k=0 n+1_1 7 Σ α, α1 а—1 k=0 Itu (а-1)(п+1)а"+1-а' n+2 +a E kak, a + 1 (а-1)2 k=0 п E sin(ak), a + 2mT cos{a[(n+1)/2]} cos(an/2) sin(a/2) 9 k=0 n Σ cos(ak), a # 2mπ sin{a[(n+1)/2]} cos(an/2) sin(a/2) 10 k=0
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