AB={1;0}
AB={1;1;-1}
Объяснение:
AB = {Bx - Ax; By - Ay} = {3 - 2; 0 - 0} = {1; 0}
AB = {Bx - Ax; By - Ay; Bz - Az} = {2 - 1; 2 - 1; 1 - 2} ={1;1;-1}
