WeBWorK Standalone Renderer

Find a matrix $A$ that has an LU factorization where $L$ is $4 \times 4$ and $U$ is $4 \times 3$ .

$L =$ $\left[\Rule{0pt}{4.8em}{0pt}\right.$ $\left]\Rule{0pt}{4.8em}{0pt}\right.$

$U =$ $\left[\Rule{0pt}{4.8em}{0pt}\right.$ $\left]\Rule{0pt}{4.8em}{0pt}\right.$

You can earn partial credit on this problem.