////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page24.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (Cos 1) (^ 5 1/3) 6 7 4)

Problem:
(= (cdot #[[5403 230 5868 1397 1740 936 6074]
           [4297 6603 7323 1042 617 9222 2767]
           [97 2553 8110 394 7744 7176 4517]
           [9518 5608 7183 893 4357 1731 1600]
           [3008 9097 8606 3376 21 6634 5640]
           [6512 2654 1731 8584 7179 7116 4474]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]])
   #[[1709] [9759] [4667] [6696] [9893] [5310]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]]
   #[[175423423522419897266]
     [564403021864916774383]
     [-938023645357643520204]
     [-851291365624487724415]
     [270542669321916341348]
     [86955944373149123485]
     [833687245285165286632]])