Give a combinatorial proof of the identity: -1 k(²) = n(n=¹) k-1.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.2: Determinants
Problem 21EQ
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Give a combinatorial proof of the identity:
k (n) = n(n-1)
Transcribed Image Text:Give a combinatorial proof of the identity: k (n) = n(n-1)
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