Question

Dados os pontos A(1,2,3), B(-6,-2,3) e C(1,2,1), determinar o versor do vetor 3(BA) ⃗-2(BC) ⃗.

Answer 1

3(BA)-2(BC)
3(A-B)-2(C-B)
3[(1,2,3)-(-6,-2,3)]-2[(1,2,1)-(-6,-2,3)]
3x(7,4,0)-2x(7,4,-2)
(21,12,0)-(14,8,-4)
(7,4,4)

Era isso?