Re: [理工] [線代]-eigenvalue證明
※ 引述《ruby791104 (阿年:))》之銘言:
: 1.Show that the eigenvalues of a triangular matrix are the diagonal elements
: of the matrix
A=[aij] ,aij=0 when i<j
or when i>j
n
det(A-kI)=Π(aii-k)=0
i=1
->k=aii ,i=1,2,...,n
: 2.Let A be an n*n matrix. Prove that A is singular if and only if λ = 0 is
: an eigenvalue of A.
1.
n
det(A)=Πλi , det(A)=0 <=> 存在一λ=0
i=1
: 可以教我一下怎麼做嗎?
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◆ From: 123.193.214.165
※ 編輯: iyenn 來自: 123.193.214.165 (04/01 23:05)
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04/02 00:07, , 1F
04/02 00:07, 1F
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