Exercises 9-12 display a matrix A and an echelon form of A . Find bases for Col A and Nul A , and then state the dimensions of these subspaces. 11. A = [ 1 2 − 5 0 − 1 2 5 − 8 4 3 − 3 − 9 9 7 − 2 3 10 − 7 11 7 ] ∼ [ 1 2 − 5 0 − 1 0 1 2 4 5 0 0 0 1 2 0 0 0 0 0 ]
Exercises 9-12 display a matrix A and an echelon form of A . Find bases for Col A and Nul A , and then state the dimensions of these subspaces. 11. A = [ 1 2 − 5 0 − 1 2 5 − 8 4 3 − 3 − 9 9 7 − 2 3 10 − 7 11 7 ] ∼ [ 1 2 − 5 0 − 1 0 1 2 4 5 0 0 0 1 2 0 0 0 0 0 ]
Intermediate Algebra for College Students (7th Edition)
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