Use the pivots of A 1 2 I to decide whether A has an eigenvalue smaller than 1 2 : A 1 2
Chapter 6, Problem 6.2.35(choose chapter or problem)
Use the pivots of A 1 2 I to decide whether A has an eigenvalue smaller than 1 2 : A 1 2 I = 2.5 3 0 3 9.5 7 0 7 7.5
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