Question

sabendo que 3u-4v=2w,determine a,b ec, sendo u=(2,-1,c),v=(a,b-2,3 e w=(4,-1,0).

Answer 1

a=-1/2, b=7/4, c=4

3u=3(2,-1,4)=(6,-3,12)
4v=4(-1/2, -1/4, 3)=(-2, -1, 12)
2w=2(4, -1, 0)=(8, -2, 0)

(6,-3,12)-(-2, -1, 12)=(8, -2, 0)