(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
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82 CAPÍTULO 7. £¡ §© ¢¦£ ¤ ¢¥ § ¡<br />
(Rm, +) ¡ ¢ ¢ ¤ <br />
<br />
<br />
α ((x, mx) + (y, my)) = α(x + y, m(x + y)) = (α(x + y), α m(x + y))<br />
= (α x + α y, α mx + α my)<br />
= (α x, α mx) + (α y, α my)<br />
= α(x, mx) + α(y, my)<br />
α (β(x, mx)) = α(β x, β mx) = (αβ x, αβ mx) = αβ(x, mx)<br />
1(x, mx) = (1x, 1 mx) = (1, mx)<br />
£¢ Rm<br />
2<br />
(IR , +, ·)<br />
¡<br />
¥¤ ¤ ¢<br />
¢ <br />
<br />
¥¤ (1, 2) (2, 1)<br />
M ¢¢¡ (IR 2 , +, ·)<br />
¨ <br />
<br />
¢ <br />
(1, 2)+(2, 1) = (3, 3) ¢ ¡ M<br />
<br />
M <br />
<br />
¡ ¢ <br />
Rm,b<br />
¢ ¡ M ©<br />
(x, mx + b) + (y, my + b) = (x + y, mx + b + my + b)<br />
£¢ Rm,b<br />
= (x + y, m(x + y) + 2b)<br />
= (x + y, m(x + y) + b)<br />
¢ ¡ 2<br />
(IR , +,<br />
<br />
·)<br />
¡ ¨ ¢ <br />
<br />
<br />
F1 = (a1, a2, a3) ∈ IR 3 | a1 − 2a2 = 0 a2<br />
<br />
<br />
F2 = {(0, 0, 0), (0, 1, 0), (0, −1, 0)}<br />
F3 = (a1, a2, a3) ∈ IR 3 | a3 ≤ 0 <br />
¢ IR 3<br />
+ a3 = 0