Question

dado os vetores u=(3 -1) e v=(-1 2), determinar o vetor x tal que:
A) 4( u -v )+ 1/3 x= 2u -x
b) 3x -(2v-u) = 2(4x-3u)

Answer 1

a)  4 (4,-3) + 1/3x = (6,-2) - x
     (16,-12) - (6.-2) = - x - 1/3x 
     (10,-10) = - 4/3x
     (30,-30) = -4x
     (-30/4,30/4) = x
x = (-15/2,15/2)