Question

Considere os vetores ⃗ u = ( − 3 , 11 ) e ⃗ v = ( 4 , 7 ) . Calcule 3 ⃗ u + 4 ⃗ v .

Answer 1

u = (-3, 11)

v = (4, 7)

3u + 4v

3.(-3, 11) + 4.(4, 7)

(-9, 11) + (16, 28)

(-9 + 16, 11 + 28)

(7, 39)