Question

considerando os vetores no plano R2,tal que, U = 2i-5j e V = i + j, calcule o vetor 3u- 2v. marque a alternativa correta.

Answer 1

U = (2, -5) e V=(1, 1)

Logo: 3U -2V
= 3(2,-5) - 2(1, 1)
= (6,-15) - (2, 2)
= (4, -17)

=> 3u-2v = 4i -17j