$\displaystyle Y = sp ${$\displaystyle [1,0,4,3]^T, [0,1,0,-1]^T, [2,-1,1,0]^T, [0,1,4,3]^T$}

Question:Find a basis for the subspace Y by eliminating from the spanning.

set any vector that can be expressed as a linear combination of its

predecessors. State the dimension of Y

I'm roughly know what I'm doing here, but I can't seem to eliminateanyvectors at all. Any help?