Объяснение:
c→ = (2+2 ; -1+3) = (4; 2)
2a→ = 2 * (2 ; -1) = (4; -2)
-3b→ = -3 * (2; 3) = (-6; -9)
d→ = -3a→ - 3d→ = -3*(2; -1) - 3*(2; 3) = (-6; 3) - (6; 9) = (-12; -6)
Объяснение:
c→ = (2+2 ; -1+3) = (4; 2)
2a→ = 2 * (2 ; -1) = (4; -2)
-3b→ = -3 * (2; 3) = (-6; -9)
d→ = -3a→ - 3d→ = -3*(2; -1) - 3*(2; 3) = (-6; 3) - (6; 9) = (-12; -6)