Question

considere os pontos no espaço A = (1,2,3) e B = (-2, 1,8). então as cordenadas do vetor ab -> são:

Answer 1

$\boxed{\boxed{\vec{AB}=B-A}}\\\\\\\vec{AB}=B-A\\\vec{AB}=(-2,1,8)-(1,2,3)\\\vec{AB}=([-2-1],[1-2],[8-3])\\\\\\\boxed{\boxed{\vec{AB}=(-3,-1,~5)}}$