8. Encontre −→ u × −→v nos casos abaixo: (a) −→ u = ( 2,−1, 3 ) e −→ v = ( 4, 1, 1 ) (b) −→ u = ( 0, 2, 0 ) e −→ v = ( 1, 3,−1 ) (c) −→ u = ( 1, 1,...

8. Encontre
−→
u × −→v nos casos abaixo:
(a)
−→
u =
(
2,−1, 3
)
e
−→
v =
(
4, 1, 1
)
(b)
−→
u =
(
0, 2, 0
)
e
−→
v =
(
1, 3,−1
)
(c)
−→
u =
(
1, 1, 2
)
e
−→
v =
(
3, 1,−1
)
(d)
−→
u =
(
2, 1, 0
)
e
−→
v =
(
0, 1,−1
)
(e)
−→
u =
(
2, 1, 4
)
e
−→
v =
(
4, 6,−5
)
(f)
−→
u =
(
−3, 1,−2
)
e
−→
v =
(
0, 1,−1
)
(g)
−→
u =
(
1, 1,−3
)
e
−→
v =
(
1,−1, 2
)
(h)
−→
u =
(
−2,−1, 3
)
e
−→
v =
(
−4, 3,−1
)