(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
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94 CAPÍTULO 8. £¡ §© ¢¦£ ¤ ¢¥ § ¡<br />
k ∈ IR vk<br />
¡ ¨ IR 5 <br />
u = (5, 1, −1, −2, −4) <br />
<br />
= (1, 0, k, 2k)<br />
−1, wk = (3, 1, −k, 0, 0)<br />
<br />
§ k (u, vk, wk) ¡ <br />
¨¥ ¨ α β γ ∈ IR α u+β vk +γ wk = 0 5 IR ≡ (0, 0, 0, 0, 0)<br />
<br />
<br />
£¢ α(5, 1, −1, −2, −4) + β(1, 0, k, −1, 2k) + γ(3, 1, −k, 0, 0) = 0IR 5<br />
⇐⇒ (5α, α, −α, −2α, −4α) + (β, 0, kβ, −β, 2kβ) + (3γ, γ, −kγ, 0, 0) = 0 IR 5<br />
⇐⇒ (5α + β + 3γ, α + γ, −α + kβ − kγ, −2α − β, −4α + 2kβ) = 0 5 IR<br />
⎧<br />
5α + β + 3γ = 0<br />
⇐⇒<br />
⇐⇒<br />
⎪⎨<br />
⎪⎩<br />
⎡<br />
⎣<br />
α + γ = 0<br />
−α + kβ − kγ = 0<br />
−2α − β = 0<br />
−4α + 2kβ = 0<br />
⎤<br />
5 1 3<br />
1 0 1<br />
−1 k −k<br />
−2 −1 0<br />
−2 k 0<br />
⎦<br />
α<br />
β<br />
γ<br />
⎡<br />
<br />
= ⎣<br />
<br />
<br />
⎡<br />
⎤ ⎡<br />
⎤<br />
0<br />
0<br />
0<br />
0<br />
0<br />
⎤<br />
⎦<br />
¢ ¢ ¢ <br />
⎣<br />
5 1 3<br />
1 0 1<br />
−1 k −k<br />
−2 −1 0<br />
−2 k 0<br />
⎦ −−−−−−→<br />
5ℓ5 + 2ℓ1<br />
−−−−−→<br />
5ℓ3 + ℓ1<br />
−−−−→<br />
ℓ5 − ℓ4<br />
⎣<br />
⎡<br />
⎣<br />
⎡<br />
⎣<br />
5 1 3<br />
1 0 1<br />
−1 k −k<br />
−2 −1 0<br />
0 5k + 2 6<br />
5 1 3<br />
1 0 1<br />
0 5k + 1 3 − 5k<br />
0 −3 6<br />
0 5k + 2 6<br />
5 1 3<br />
0 1 −2<br />
0 5k + 1 3 − 5k<br />
0 −3 6<br />
0 5(k + 1) 0<br />
⎦ −−−−−−→<br />
5ℓ4 + 2ℓ2<br />
⎤<br />
⎡<br />
⎣<br />
⎦ −−−−−−→<br />
−5ℓ2 + ℓ1<br />
⎤<br />
⎦ −−−−→<br />
ℓ5 − ℓ3<br />
⎡<br />
⎣<br />
5 1 3<br />
1 0 1<br />
−1 k −k<br />
0 −3 6<br />
0 5k + 2 6<br />
⎡<br />
⎣<br />
⎤<br />
⎦<br />
5 1 3<br />
0 1 −2<br />
0 5k + 1 3 − 5k<br />
0 −3 6<br />
0 5k + 2 6<br />
⎤<br />
⎦<br />
5 1 3<br />
0 1 −2<br />
0 4 −3 + 5k<br />
0 −3 6<br />
0 5(k + 1) 0<br />
⎤<br />
⎦