The formula for calculating the sum of all natural integers from 1 to n is well-known: n² Sn =1+2+3+... +n = 2 %3D Similary, we know about the formula for calculating the sum of the first n squares: n3 Qn = 1.1+2-2+3-3+... +n·n = 3 n2 Now, we reduce one of the two multipliers of each product by one to get the following sum: Mn = 0 1+1 -2+2.3+3-4+ ... + (n – 1) -n Find an explicit formula for calculating the sum Mn.

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter2: Working With Real Numbers
Section2.3: Rules For Addition
Problem 7P
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The formula for calculating the sum of all natural integers from 1 to n is well-known:
n2 +n
Sn =1+2+ 3+... + n =
2
%3D
Similary, we know about the formula for calculating the sum of the first n squares:
n n?
Qn = 1·1+2-2+3-3+... + n · n =
6.
Now, we reduce one of the two multipliers of each product by one to get the following sum:
M, = 0 1+1 -2+2.3+3-4+.. + (n - 1) n
Find an explicit formula for calculating the sum Mn-
8:14 PM
VIE
11/20/2021
耳e
Transcribed Image Text:The formula for calculating the sum of all natural integers from 1 to n is well-known: n2 +n Sn =1+2+ 3+... + n = 2 %3D Similary, we know about the formula for calculating the sum of the first n squares: n n? Qn = 1·1+2-2+3-3+... + n · n = 6. Now, we reduce one of the two multipliers of each product by one to get the following sum: M, = 0 1+1 -2+2.3+3-4+.. + (n - 1) n Find an explicit formula for calculating the sum Mn- 8:14 PM VIE 11/20/2021 耳e
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