Formula_11607

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