(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
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86 CAPÍTULO 8. £¡ §© ¢¦£ ¤ ¢¥ § ¡<br />
+ (c − a − b − γ) (0, 0, 1) γ ∈ IR<br />
(a, b, c) = (a − 2γ) (1, 0, 1) + (b + 2γ) (0, 1, 1) + γ(2, −1, 1)<br />
(a, b, c) = (1, 2, 3)£¢ <br />
(1, 2, 3) = (1 − 2γ) (1, 0, 1) + (2 + 2γ) (0, 1, 1) + γ(2, −1, 1)<br />
−γ(0, 0, 1)<br />
¡ γ = 1 <br />
(1, 2, 3) = −(1, 0, 1) + 4(0, 1, 1) + (2, −1, 1) − (0, 0, 1)<br />
γ = −1<br />
(1, 2, 3) = 3(1, 0, 1) − (2, −1, 1) + (0, 0, 1)<br />
¡ ¨ ¤ <br />
§ <br />
<br />
S = x 2 + 1, x + 1, 2x 2 − x + 1 <br />
¢<br />
¢ 2 x − x + ¡ ¢ 2<br />
<br />
S<br />
x 2 − x ¡ ¢ S<br />
<br />
¢ ¡ 2<br />
<br />
k ∈ ¤ 2 IR 3x − 5x +<br />
¡<br />
k<br />
¢ S<br />
2 x − x + ¡ ¢ 2 ¥¤ S <br />
<br />
β <br />
α γ<br />
x2 − x + 2 = α (x2 + 1) + β (x + 1) + γ (2x2 − x + 1)<br />
¨¥ ¨ ¤<br />
α β γ ¢ <br />
<br />
α + 2γ = 1<br />
= (α + 2γ) x 2 + (β − γ) x + α + β + γ<br />
β − γ = −1<br />
α + β + γ = 2<br />
⇐⇒<br />
α = 1 − 2γ<br />
β = −1 + γ<br />
0 = 2<br />
=⇒