Wednesday, August 23, 2017

linear algebra 08/23/2017 lecture 17

标准正交Q为什么好

QTQ = [q1t;q2t...]*[q1,12...]= [1,0...] 单元矩阵

projection matrix
P = Q(QtQ)-1Qt = QQt (=1 if Q is square)

gram-schmidt 正交化



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