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Independence: The columns of A are independent when the nullspace N (A) contains only the zero vector. Example1: 1. If three vectors are not in the sa 阅读全文
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Special Solutions: Notice what is special about s 1 and S2. They have ones and zeros in the last two components. Those components are "free" and we ch 阅读全文
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Vector Space: R1, R2, R3,R4 , .... Each space Rn consists of a whole collection of vectors. R5 contains all column vectors with five components. This 阅读全文
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1. Linear Combination Two linear operations of vectors: Linear combination: 2.Geometric Explainations 2D case 3D case:for 3 vectors u,v,w,the importan 阅读全文