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求怎么把 [3 -2 e | f] [1 0 1 | -1] [2 1 1 | -1] 变为row echelon form?

1. Let A be the 9 15 coefficient matrix of a homogeneous linear system, and suppose that this system has infinitely many solutions with 8 parameters.  What is the rank of A?  Do the columns of A, considered as vectors in R9, span R9? 2. Find a basis for the solution space of the...

1. Let A be the 9 15 coefficient matrix of a homogeneous linear system, and suppose that this system has infinitely many solutions with 8 parameters.  What is the rank of A?  Do the columns of A, considered as vectors in R9, span R9? 2. Find a basis for the solution space of the...

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