- #1
jeffreylze
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Homework Statement
After sorting out basis, now I encountered a new term, Subset. And I get all confused again, clearly I'm not good at these, but I am learning.
Let S = {(1,-1,2,1) , (0,1,1,-2) , (1,-3,0,5)}
Find a subset of S that is a basis for <S>
Homework Equations
The Attempt at a Solution
I formed a matrix and row reduced it to row echelon form. Then the corresponding columns on the leading entry gives the basis which is {(1,-1,2,1) ,(0,1,1,-2)} . But now, to answer the question, how to find a subset ? and also, what does <S> mean ? Is that a symbol for a basis?