(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H
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o ¨ ¢ ¡ £¢¥¤§¦©¨<br />
¡ § ¨<br />
<br />
F = {(a, a2 ) | a ∈ IR} ¢¢¡ IR 2 <br />
<br />
G = A ∈ Mn×n(IR) | A + AT ¢ <br />
= αIn α<br />
¡ <br />
∈ IR<br />
<br />
¡ ¨ IR 4 <br />
<br />
Mn×n(IR)<br />
F = {(a, b, c, d) ∈ IR 4 | d = a + b + c}<br />
G = (1, 1, 0, 0), (1, 0, 1, 1), (1, 2, −1, 1) <br />
¡ F 4<br />
IR<br />
F<br />
<br />
G<br />
dim F ∩ G dim(F + G)<br />
¤ <br />
<br />
<br />
¡ ¢<br />
¡ ¨ A =<br />
179<br />
<br />
<br />
<br />
2 −1 1<br />
<br />
4 −3 1<br />
4 −3 1<br />
A<br />
A<br />
<br />
<br />
<br />
A ¡ ¢ ¨ <br />
P <br />
<br />
¤ <br />
P −1 <br />
2<br />
AP =<br />
0 0<br />
<br />
¨¥ ¨ § <br />
0 0 0<br />
0 0 −2<br />
a = 0 b = 0 α = 0 α = 1 <br />
<br />
a 2 + b 2 = (a + b) 2 αa 2 = (αa) 2<br />
<br />
(a, a 2 ) + (b, b 2 ) = (a + b, a 2 + b 2 ) = (a + b, (a + b) 2 ),