討論串[理工] 線代
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(1) To solve a system of 5 linear equation in 5 variables. with Cramer's rule,the determinants of six 5*5 matrices. must be evaluated.. T:我怎麼覺得是錯,must
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-1. [A|I]→[I|A ]. -1. 令A =[A1 A2 A3 A4]. 所以我們可以知道. u = 5A1 + 6A2 + 7A3 + 8A4. 而新的解則是. v = 5A1 + 6A2 +14A3 + 8A4. 因為A可逆,所以A3≠0. => u≠v.. 3 2. T:R →R. T
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(1) An elementary matrix is a matrix that can be obtained by. a sequence of elementary row operations on an identity. matrix.. F:看不出來錯在哪.... (2) Suppo
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