As an example, in matrix
$\begin{bmatrix} 1 & -2 & 1 \\ 2 & 1 & -1 \\ -3 & 1 & -2 \end{bmatrix}$ the two row
operations $R2 = -2R1 + R2$ and
$R3 = 3R1 + R3$ are used to convert
the 2 and -3 in the first column to 0
. Note that in both equations (i.e., row
operations), the rows are being added (not
subtracted). In other words, the correct
format is $R2 = -2R1 + R2$ , not
$R2 = R2 - 2R1$. You are expected to
do the same below.
Now, given the matrix
$\begin{bmatrix} 1 & 2 & -1 \\ 5 & 3 & 4 \\ -2 & 0 & 1 \end{bmatrix}$.
Enter in the box below the row operation
that would accomplish the same thing for
the second row (please avoid entering a
blank space in your answer).
Enter in the box below the row operation
that would accomplish the same thing for
the third row.
