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Proof Without Words: Alternating Sum of an Even Number of Triangular Numbers

The author provides a visual solution for the alternating sum of an even number of triangular numbers.
Old Node ID: 
3650
MSC Codes: 
40A05
Author(s): 
Ángel Plaza (ULPGC Spain)
Publication Date: 
Sunday, April 10, 2011
Original Publication Source: 
Mathematics Magazine
Original Publication Date: 
February, 2007
Subject(s): 
Sequences and Series
Algebra
Algebra and Number Theory
Topic(s): 
Background
Special Sequences
Flag for Digital Object Identifier: 
Publish Page: 
Furnished by JSTOR: 
File Content: 
Rating Count: 
22.00
Rating Sum: 
67.00
Rating Average: 
3.05
Applicable Course(s): 
3.1 Mainstream Calculus I
Modify Date: 
Friday, August 17, 2012
Average: 3.1 (22 votes)

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