1.

Which among the following is the new matrix after applying the elementary operation C1→4C1 on the matrix A=\(\begin{bmatrix}5&8\\-1&2\\3&-4\end{bmatrix}\)?

A. \(\begin{bmatrix}5&8\\-1&2\\3&-4\end{bmatrix}\)
B. \(\begin{bmatrix}20&8\\-4&2\\12&-4\end{bmatrix}\)
C. \(\begin{bmatrix}20&8\\4&2\\12&-4\end{bmatrix}\)
D. \(\begin{bmatrix}20&8\\-4&2\\12&4\end{bmatrix}\)
Answer» C.


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