Re: [線代] positive definite

[hjmeric (Jimmy)]

※ 引述《Lpspace (Danny)》之銘言：
: 給定一個矩陣A (not symmetric) is a positive definite matrix
: then A^n is potive definite or not?

A=[1 1] ,A^n=[1 n] ,v=[1 -1] ,v'(A^n)v=2-n
  [0 1]      [0 1]


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