Find the standard matrix for the linear transformation T defined by the formula T\bigl(x_{1},x_{2}\bigr)=\bigl(x_{2},-\,x_{1},x_{1}+3x_{2},\,x_{1}-x_{2}\bigr).
The standard matrix for the linear transformation T\bigl(x_{1},x_{2}\bigr)=\bigl(x_{2},-x_{1},x_{1}+3x_{2},x_{1}-x_{2}\bigr) is
T=\left[\begin{array}{c c c}{{\ \ 0}}&{{\ \ 1}}\\ {{-1}}&{{\ \ 0}}\\ {\ \ \ {1}}&{{\ \ 3}}\\ {{\ \ \ 1}}&{{-1\ }}\end{array}\right].