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**use rowspace/colspace to determine a basis for the subspace of R^n spanned by the given set of vectors:**

{(1,-1,2),(5,-4,1),(7,-5,-4)}

{(1,-1,2),(5,-4,1),(7,-5,-4)}

*note: the actual instructions are to use the ideas in the section to determine the basis, but the only two things learned in the section are rowspace and colspace.

## The Attempt at a Solution

- I thought you could just find the rowspace, and that would be a subspace of R^n, but the answer in the back of the book isn't at all the same. How would you go about solving this problem?