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(0 )2 1436587@9BAC9EDGF4HI 7P5QHRFTSVU0DXW6F4H

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[Aα | B] =<br />

−1 −1 1 | −1<br />

3 α + 2 −3 | 3<br />

¢ <br />

<br />

−−−−−→<br />

ℓ2 + 3ℓ1<br />

£¢<br />

<br />

2 α + 1 −(α + 2) | 2<br />

−1 −1 1 | −1<br />

0 α − 1 0 | 0<br />

0 α − 1 −α | 0<br />

r (Aα) = r [Aα|B] =<br />

¡ α = 0 £¥¤ α = 1 ¡¢¡£©¥ £ £<br />

¡ α = 0 £¥¤ α = 1 ¡¢¡£©¥ £ £<br />

−−−−→<br />

ℓ3 − ℓ2<br />

−−−−−→<br />

ℓ3 + 2ℓ1<br />

−1 −1 1 | −1<br />

3 α + 2 −3 | 3<br />

0 α − 1 −α | 0<br />

−1 −1 1 | −1<br />

0 α − 1 0 | 0<br />

0 −α | 0<br />

2 ¢¡ α = 0 £¥¤ α = 1<br />

3 ¢¡ α = 0 ¡ α = 1<br />

§<br />

¡¢ ¡ £ ¡¢<br />

©£<br />

§<br />

¡£ ¡¢ ¡¤<br />

§<br />

¡¢ ¡ £ ¡¢ ¡£ ¡¢ <br />

©£<br />

<br />

α 2 ¡ <br />

=<br />

<br />

1 1 −1<br />

0 1 0<br />

0 0 −2<br />

x<br />

y<br />

z<br />

=<br />

1<br />

0<br />

0<br />

⇐⇒<br />

<br />

<br />

(x, y, z) = (1, 0, 0)<br />

<br />

β 1 −1<br />

<br />

A = 2 β + 2 2 β ∈ IR<br />

<br />

2β + 1 3 −1<br />

i = 1, 2, 3 j = 1, 2, 3 Aij £¢<br />

<br />

˛<br />

˛<br />

bA11 = ˛<br />

β + 2 2<br />

3 −1<br />

¢ (i, j) A<br />

˛<br />

bA13 = ˛<br />

˛<br />

bA22 = ˛<br />

˛<br />

bA31 = ˛<br />

˛<br />

bA33 = ˛<br />

2 β + 2<br />

2β + 1 3<br />

β −1<br />

2β + 1 −1<br />

1 −1<br />

β + 2 2<br />

β 1<br />

2 β + 2<br />

˛ = −β − 8,<br />

b<br />

<br />

<br />

˛ = −2β2 − 5β + 4,<br />

˛ = β + 1,<br />

b<br />

˛ = β + 4,<br />

b<br />

˛ = β2 + 2β − 2.<br />

<br />

<br />

§<br />

£ £ ¤ 1<br />

¡<br />

§<br />

£ ¡¤<br />

187<br />

<br />

<br />

x + y − z<br />

y<br />

−2z<br />

¢ ¡ <br />

˛<br />

A12 = − ˛<br />

˛<br />

bA21 = − ˛<br />

˛<br />

A23 = − ˛<br />

˛<br />

A32 = − ˛<br />

2 2<br />

2β + 1 −1<br />

1 −1<br />

3 −1<br />

β 1<br />

2β + 1 3<br />

β −1<br />

2 2<br />

=<br />

1<br />

0<br />

0<br />

<br />

<br />

˛<br />

˛ = −2,<br />

˛ = 4β + 4,<br />

˛ = −β + 1,<br />

˛ = −2β − 2,

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