Question

Find the sum of vector A and B
A=64i + 64j
B=64i - 128j

Answer 1

Given:

${\bf A}=64{\bf i}+64{\bf j};$

${\bf B}=64{\bf i}-128{\bf j}.$

The sum of vectors

$${\bf A}+{\bf B}=64{\bf i}+64{\bf j}+64{\bf i}-128{\bf j}=128{\bf i}-64{\bf j}.$$