Question

determinar o valor de x ,tal que 5x=u-2v,sendo u=(1,-4,15) e v=(-3,2,5)

Answer 1

5x = u - 2v
5x = (1, -4, 15) - 2.(-3, 2, 5)
5x = (1, -4, 15) - (-6, 4, 10)
5x = (7, -8, 5)
x = (7/5, -8/5, 1)