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\leftline{Mathematics 244 -- Linear Algebra}
\leftline{Definitions Quiz 4 -- February 23, 2007}
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\leftline{Your Name: $\underline{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }$}
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A) (5) Define:  The set $B$ is a {\it basis} for the subspace $W \subset {\bf R}^n$.  
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B) (5)  True or False, and explain (briefly!):  If $A$ is a $3 \times 6$ matrix, 
then we could have ${\rm rank}(A) = 2$ and $\dim Nul(A) = 2$.  
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