Řeš v \mathbb{R}\times\mathbb{R}\times\mathbb{R} soustavu rovnic:
x-10 y+20 z=0
3 x+2 z=5
-2 x+5 y-11 z=3
K=\{(1,1,1)\}
K=Ø
K=\{(0,0,0)\}
K=\{(2,3,4)\}
