Level:
Project ID:
9000019909
Accepted:
1
Clonable:
0
Easy:
0
The augmented matrix of a system of three equations with three unknowns is the following matrix
\(M'\). Identify the matrix which
is row equivalent to \(M'\).
\[
M' = \left(\begin{array}{ccc|c}
1 & 2 & 4 & 14\\
-1 & 0 & 3 & 7\\
3 & 1 & -2 & 42
\end{array}\right)
\]
\(\left(\begin{array}{ccc|c}
1 & 2 & 4 & 14\\
0 & 2 & 7 & 21\\
0 & 0 & 7 & 105
\end{array}\right)\)
\(\left(\begin{array}{ccc|c}
1 & 2 & 4 & 14\\
0 & 2 & 7 & 21\\
0 & 0 & -8 & 70
\end{array}\right)\)
\(\left(\begin{array}{ccc|c}
1 & 2 & 4 & 14\\
0 & 2 & 7 & 21\\
0 & 0 & -29 & -147
\end{array}\right)\)
\(\left(\begin{array}{ccc|c}
1 & 2 & 4 & 14\\
0 & 2 & 1 & 7\\
0 & 0 & -23 & 35
\end{array}\right)\)