The matrix \([A]=\begin{bmatrix}2&1\\\ 4&-1\end{bmatrix}\) is decomposed into a product of a lower triangular matrix [L] and an upper triangular matrix [U]. The properly decomposed [L] and [U] matrices respectively are
1
\(\begin{bmatrix}1&0\\\ 4&-1\end{bmatrix}\) and \(\begin{bmatrix}1&1\\\ 0&-2\end{bmatrix}\)
2
\(\begin{bmatrix}2&0\\\ 4&-1\end{bmatrix}\) and \(\begin{bmatrix}1&1\\\ 0&1\end{bmatrix}\)
3
\(\begin{bmatrix}1&0\\\ 4&1\end{bmatrix}\) and \(\begin{bmatrix}2&1\\\ 0&-1\end{bmatrix}\)
4
\(\begin{bmatrix}2&0\\\ 4&-3\end{bmatrix}\) and \(\begin{bmatrix}1&0.5\\\ 0&1\end{bmatrix}\)