Which of the following column operation is incorrect for the matrix A=\(\begin{bmatrix}1&2&5\\6&3&8\end{bmatrix}\) ?
(a) C1→3C1
(b) C2→C1+C2
(c) C2→2+2C2
(d) C2→2C1+2C2-C3
This question was addressed to me during an online interview.
My question is taken from Elementary Operation (Transformation) of a Matrix topic in division Matrices of Mathematics – Class 12