a(5*2;2*2;1*2);(10;4;2);
с(10;7;0)
а (5; 2; 1), b (0; -3; 2)
с = 2a - b
с = 2(5; 2; 1) - (0; -3; 2) = (10 - 0; 4 +3; 2 - 2) = (10; 7; 0)
a(5*2;2*2;1*2);(10;4;2);
с(10;7;0)
а (5; 2; 1), b (0; -3; 2)
с = 2a - b
с = 2(5; 2; 1) - (0; -3; 2) = (10 - 0; 4 +3; 2 - 2) = (10; 7; 0)