////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page44.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (Csc 1) (Sin 1) 7 8 2)

Problem:
(= (cdot #[[11 88 39 51 5 77 81 21]
           [21 62 61 59 94 52 37 45]
           [51 0 35 27 82 98 34 9]
           [79 62 62 52 65 25 36 66]
           [35 91 84 36 73 57 19 4]
           [87 91 36 63 56 80 30 85]
           [30 23 24 72 47 92 85 60]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]])
   #[[84] [14] [70] [98] [48] [7] [89]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]]
   #[[-201339657284]
     [-71541632818]
     [340550809695]
     [-544514134720]
     [-98036518227]
     [169740292081]
     [14071220540]
     [441883354665]])