Question

Se u ⃗ = (2,-1,0) e v ⃗ = (-3,1,4) então o vetor w ⃗= 2 u ⃗ + v ⃗ será:

a) w ⃗ = (7, -3, 4)
b) w ⃗ = (7, -3, -4)
c) w ⃗ = (-1, 0, 4)
d) w ⃗ = (1, -1, 4)

Answer 1

w ⃗= 2 u ⃗ + v
w= 2(2,-1,0) + (-3,1,4) =

w= (4,-2,0) + (-3,1,4)

w= (4-3, - 2+1, 0+4) 

w= (1 , - 1 , 4)


letra D