Question

14.Encontre c tal que o vetor c = (2, c, 3) seja ortogonal a w = (1, -2, 1).

Answer 1

Oi Gabi

u(2,c,3) e w(1,-2,1)

u.v = 0

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

2 - 2c + 3 = 0

2c = 5, c = 5/2