Prove that k(K) a) combinatorial b) algebraic proof (1) for integers n and k with 1 ≤ k ≤ n, using a: k proof; = n

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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Prove that k (7) = n (n − ¹) for integers n and k with 1 ≤ k ≤ n, using a:
1)
a) combinatorial proof;
b) algebraic proof
Transcribed Image Text:Prove that k (7) = n (n − ¹) for integers n and k with 1 ≤ k ≤ n, using a: 1) a) combinatorial proof; b) algebraic proof
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