Question

Dados os vetores no plano, u = 3i - 4j e v = 2i + 2j o vetor 2u + v é: Quest.: 3 -6i + 8j 10i - 3j 8i - 6j 6i + 8j 6i -8j

Answer 1

u = 3i - 4j
u = (3,-4)

v = 2i + 2j
v = (2,2)

x = 2u + v

x = 2(3,-4) + (2,2)

x = (6,-8) + (2,2)

x = (6 + 2, - 8 + 2)

x = (8,-6)

x = 8i - 6j