Formula_11606

\[\left.\begin{array}{l}\lambda x_{1}=a_{11} \lambda_{1} y_{1}+a_{12} \lambda_{2} y_{2}+a_{13} \lambda_{3} y_{3}+a_{14} \lambda_{4} y_{4} \\\lambda x_{2}=a_{21} \lambda_{1} y_{1}+a_{22} \lambda_{2} y_{2}+a_{23} \lambda_{3} y_{3}+a_{24} \lambda_{4} y_{4} \\\lambda x_{3}=a_{31} \lambda_{1} y_{1}+a_{32} \lambda_{2} y_{2}+a_{33} \lambda_{3} y_{3}+a_{34} \lambda_{4} y_{4} \\\lambda x_{4}=a_{41} \lambda_{1} y_{1}+a_{42} \lambda_{2} y_{2}+a_{43} \lambda_{3} y_{3}+a_{44} \lambda_{4} y_{4}\end{array}\right\}\]