1) [ a) dim M = 4, baze je napø. 
                    1 2    0 5   0 0    0 0
                   -1 1   -3 4   0 1    1 0
     b) dim M = 4, bazí jsou napø. první 4 matice.
   ]

2) [dim V = 2, dim W = 3, dim(V v W) = 4, dim prùniku = 1
    pr. baze:     V = <(1,1,-2,-1),(0,-1,3,3)>
                  W = zadané
              V v W = <(1,1,-2,-1),(0,-1,3,3),(0,0,1,1),(0,0,0,1)>        
             prùnik = <(3,2,-3,0)>  
   ]
3) [ hod A = 4; hod A = 2 ]
4) [a) dim V = 3, dim W = 2, dim(V v W) = 4, dim pruniku = 1
       pr. baze:  V = <(1,1,2,0),(0,-1,-5,1),(0,0,1,0)>
                  W = <(1,2,1,-1),(0,-1,-2,3)>
              V v W = <(1,1,2,0),(0,-1,-5,1),(0,0,-3,2),(0,0,0,1)>        
             prùnik = <(2,3,0,1)>