Dane są punkty A= (2,1) , B=(1,1) oraz C=(4,3). Znajdź współrzędne wektora w = AB- 2AC

A = (2; 1),  B = (1; 1), C = (4; 3) --> AB = [ 1 - 2; 1 - 1] = [ - 1; 0 ] --> AC = [ 4 - 2; 3 - 1] = [ 2; 2 ]   --> 2 AC = 2*[ 2; 2 ] = [ 4; 4 ] zatem --> w  = [ -1 ; 0 ]  - [ 4; 4] = [ -1 - 4; 0 - 4] = [ - 5; - 4 ] =============================================