Question

Calcule o módulo do vetor AB , sendo A(3, – 2, 5) e B(5, – 1, 3).

Answer 1

$v=AB \\ \\ v=B-A \\ \\ v=(5,-1,3)-(3,-2,5) \\ \\ v=(2,1,-2) \\ \\ ||v||=\sqrt{2^{2}+1^{2}+(-2)^{2}} \\ \\ ||v||=3$