怎麼做怎麼錯...做了好幾次答案都是不同
[3 2 2 ] t [17 8]
A= [2 3 -2 ] A A = [8 17] λ=25,9 對應的vector為[1/√2] [1/√2 ]
[1/√2] , [-1/√2]
[1/√2 1/√2 ]
∴U=[1/√2 -1/√2 ]
t
A A=[13 12 2 ] λ=25,9,0 對應的vector為 [1/√2] [-1/√18] [-2/3]
[12 13 -2 ] [1/√2] [ 1/√18] [ 2/3]
[2 -2 -8 ] [ 0 ],[-4/√18],[ 1/3]
T
A=UΣV = [1/√2 1/√2 ] [5 0 0] [1/√2 1/√2 0 ]
[1/√2 -1/√2 ] [0 3 0] [-1/√18 1/√18 -4/√18 ]
[-2/3 2/3 1/3 ]
算出來都跟答案顛倒@@ 我是錯再哪阿？
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