Question: 3. A. Find a bais for the subspace span by the vectors. What is the dimension of the subspace? $left(begin{array}{c}-3 1 0 16end{array} ight],left[begin{array}{c}-2 11

3. A. Find a bais for the subspace span by the

3. A. Find a bais for the subspace span by the vectors. What is the dimension of the subspace? $\left(\begin{array}{c}-3 1 0 16\end{array} ight],\left[\begin{array}{c}-2 11 21 3\end{array} ight], \left[\begin{array}{c}0 \\ -6 3\end{array} ight]$ b. Suppose a $4 \times 7$ matrix has 3 pivot columns is $\mathrm{Col} \mathrm{A}=R^{3}$. What the dimension of the Nul A? Explain your answer.CS.SD. 125

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