# Basis of row(A)

## Homework Statement

http://img708.imageshack.us/img708/7309/10324398.jpg [Broken]

## The Attempt at a Solution

First I row reduced the matrix into the RREF and got

$$\left[ \begin{array}{cccc} 1 & 0 & -1 & -2 \\ 0 & 1 & 2 & 3 \\ 0 & 0 & 0 & 0 \end{array} \right]$$

(0,1,2,3) is a linear combinatin of (1,2,3,4) and (2,6,10,14) so you drop it. Therefore {(1,0,-1,-2), (0,1,2,3)} is a basis of row(A).

Am I correct?

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