Sejam as matrizes

$$A=\left[\begin{array}{cccc}1& 0& \frac{1}{2}& -1\\ -2& 5& 2& -3\\ 1& -1& 2& 1\\ -5& 1& \frac{3}{2}& 0\end{array}\right]$$

$$B=\left[\begin{array}{cccc}1& 3& -\frac{1}{2}& 1\\ 1& -2& -2& 3\\ -1& 1& 1& 1\\ 5& -1& \frac{1}{2}& 5\end{array}\right]$$

Determine o elemento $C_{34}$ da matriz $C=(A+B{)}^{-1}$.