Let the reduced row echelon form of be Determini if the first second and fourth columns of are would this just mean that you substitute the first second and fourth and perform row operations?
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Originally Posted by lllll Let the reduced row echelon form of be Determini if the first second and fourth columns of are would this just mean that you substitute the first second and fourth and perform row operations? In the Matrix A we need to express the columns without 1 as a liner combination of the colums with ones. for example and These are called the dependency equations You can find the original column vectors using the same equations. so
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