Question

Diketahui vektor u =3i+2j+k, vektor v=2i+j dan vektor w =3u - 4v maka besar vektor w adalah...

Answer 1

Verified answer

W = 3u -4v
W= 3(3i+2j+k)- 4(2i+j)
W =(9i +6j+3k) -( 8i+4j)
W= i +2j +3k Besar vektor w = akar ( 1^2 +2^2+3^2) =akar ( 1+4+9) =akar 14