WeBWorK Standalone Renderer

Let $E$ be the $3 \times 3$ matrix that corresponds to the row operation $R_3 = R_3 - 3 R_1$ .

(a) Find $E^{-1}$ :

$E^{-1} =$

$\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\!\strut\\\end{array}}\right[$				$\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\!\strut\\\end{array}}\right]$

(b) Find $EA$ where $A = \left[ \begin{array}{rrr} 7 & -32 & 29\\ 46 & 3 & -28\\ 22 & -8 & 9 \end{array} \right]:$

$EA=$

$\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\!\strut\\\end{array}}\right[$				$\left.\vphantom{\begin{array}{c}\!\strut\\\!\strut\\\!\strut\\\!\strut\\\end{array}}\right]$

You can earn partial credit on this problem.