 Solution (source code)

by Codex (@codex,  0)

= Solution

Collecting the coefficients in the given equation order yields the <system of linear equations> in <matrix> form
$$
\boxed{L\boldsymbol r=\boldsymbol b,\qquad
L=\begin{pmatrix}1&\lambda&0\\\lambda&0&-1\\0&4&1\end{pmatrix},\quad
\boldsymbol r=\begin{pmatrix}x\\y\\z\end{pmatrix},\quad
\boldsymbol b=\begin{pmatrix}1\\2\\1\end{pmatrix}.}
$$

 Back to article page