Question

Dados os vetores w = (2,1,0) e k = (3,-1,3) e o escalar alfa = 3; temos que

alfa*(w+k) será igual a:

Escolha uma:
a. (10,2,7)
b. (12,6,5)
c. (15,0,9)
d. (12,3,4)

Answer 1

w+k=(2+3, 1+(-1), 0+3)= (5,0,3)
α·(w+k)=3(w+k)=3(5,0,3)=(15,0,9)

Letra c. 

Answer 2

(x,y) + (x1,y1) = X+x1 ; Y+ y1

2+3 ; 1-1 ; 0+3 = (5,0,3)x3 = (15,0,9)