Risolvi {rrrr}{2}&{1}&{-1}&{2}{1}&{3}&{2}&{-3}{-1}&{2}&{2}&{-1}{2}&{-3}&{-1}&{4}^-1

$$\left( \begin{array} { r r r r } { 2 } & { 1 } & { - 1 } & { 2 } \\ { 1 } & { 3 } & { 2 } & { - 3 } \\ { - 1 } & { 2 } & { 2 } & { - 1 } \\ { 2 } & { - 3 } & { - 1 } & { 4 } \end{array} \right) ^ { - 1 }$$

Calcola

$$\left(\begin{matrix}\frac{1}{58}&\frac{10}{29}&-\frac{7}{29}&\frac{11}{58}\\\frac{10}{29}&-\frac{3}{29}&\frac{5}{29}&-\frac{6}{29}\\-\frac{7}{29}&\frac{5}{29}&\frac{11}{29}&\frac{10}{29}\\\frac{11}{58}&-\frac{6}{29}&\frac{10}{29}&\frac{5}{58}\end{matrix}\right)$$

Calcola il determinante

$$-\frac{1}{58} = -0,017241379310344827$$