Hallo,
\( \begin{array}{l}f_{1}=\frac{5 x_{1}}{1+x_{2}} \\ f_{2}=\frac{11 x_{2}}{1+\frac{2 x_{2}}{x_{1}}}\end{array} \)
Die Jacobi Matrix ist allgemein definiert:
\( D f\left(x_{1}, y_{2}\right)=\left(\begin{array}{ll}\frac{\partial f_{1}}{\partial x_{1}} & \frac{\partial f_{1}}{\partial x_{2}} \\ \frac{\partial f_{2}}{\partial x_{1}} & \frac{\partial f_{2}}{\partial x_{2}}\end{array}\right) \)