Question

In reperul cartezian xoy se considera punctele A (4,-8) si B (6,3). sa se determine coordonatele vectorul OA+OB

Answer 1

OA=4i-8j
OB=6i+3j
OA+OB=10i-5j

Answer 2

OA = (4-0)i + (-8-0)j
OA = 4i - 8j
OB = (6-0)i + (3-0)j
OB = 6i + 3j
OA + OB = 4i - 8j + 6i + 3j =10i -5j ⇒ OA+OB(10;-5)