Question

Dados os vetores u(3,-1,1),v=(1,2,2),w=(2,0,-3), calcular: a) u.(w×v)

Answer 1

u.(w×v) = (3,-1,1) .[(2,0,-3).(1,2,2)]

(3,-1,1) .[(2,0,-6)]

( 6, 0, - 6 )