Scilab-Branch-6.1-GIT
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See the recommended documentation of this function
invr
(有理) 行列の逆
呼び出し手順
F = invr(H)
パラメータ
- H
多項式または有理行列
- F
有理行列
説明
invr はLeverrierのアルゴリズムにより
H-1を計算します (関数コード参照).
例
s = %s; H = [s, s*s+2 ; 1-s, 1+s], iH = invr(H), H * iH [Num,den] = coffg(H); Num/den H = [1/s, (s+1) ; 1/(s+2), (s+3)/s]; invr(H)
--> H = [s, s*s+2 ; 1-s, 1+s], iH = invr(H), H * iH
H =
s 2 +s²
1 -s 1 +s
iH =
1 +s -2 -s²
---------- ----------
-2 +3s +s³ -2 +3s +s³
-1 +s s
---------- ----------
-2 +3s +s³ -2 +3s +s³
ans =
1 0
- -
1 1
0 1
- -
1 1
--> [Num,den] = coffg(H); Num / den
ans =
1 +s -2 -s²
---------- ----------
-2 +3s +s³ -2 +3s +s³
-1 +s s
---------- ----------
-2 +3s +s³ -2 +3s +s³
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