Question

a.w=(-14,-23,16)
b.w=(8,9,31)
c.w=(21,-12,7)
d.w=(31,3,-14)
e.w=(21,-14,6)

Answer 1

Bom dia Fatima

u1 = (5, 3, -1)
u2 = (-7, 1, 4)

a1 = 2
a2 = -3

w = a1*u1 + a2*u2
w = 2*(5, 3, -1) - 3*(-7, 1, 4)
w = (10, 6, -2) - (-21, 3, 12)
w = (10, 6, -2) + (21, -3, -12)

w = (31, 3, -14)