Question

find the vector sum of the 3 vectors. A= -3i - 2j + 7k, b=i + 3j + 3k, c= -5k

Answer 1

Vector addition is done component wise: $(x_1, y_1, z_1) + (x_2, y_2, z_2) = (x_1 + x_2 , y_1 + y_2, z_1 + z_2)$Therefore:

$\bold a + \bold b + \bold c = (-3, -2, 7) + (1, 3, 3) + (0, 0, -5) = (-2, 1, 5)$