Question

dados os vetores u = 2i+j+3k , V = 3i-j+mk , calcular o valor de M de modo que u seja ortogonal a V

Answer 1

u = (2,1,3)

v = (3,-1,m)

u ⊥ v :. u.v = 0

(2,1,3).(3,-1,m) = 0

6 - 1 + 3m = 0

m = - 5/3