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See the recommended documentation of this function

Scilabヘルプ >> Polynomials > coffg

coffg

多項式行列の逆

呼び出し手順

[Ns,d] = coffg(Fs)

パラメータ

Fs

正方多項式行列

説明

coffgFs^-1 を計算します. ただし, Fs は余因子法による多項式行列です.

Fs inverse = Ns/d

d = 共通分母; Ns = 分子 (多項式行列)

(大きな行列の場合,時間がかかりますが,結果は一般に信頼できます)

// With polynomials
a = [ %s, %s^2+1; %s  %s^2-1];
[a1, d] = coffg(a)
(a1/d) - inv(a)

// With rationals
a = [%s 0 ; 0 1/%s]
[a1, d] = coffg(a)
(a1/d) - inv(a)

参照

  • inv — 逆行列
  • invr — (有理) 行列の逆
  • glever — 行列ペンシルの逆
  • determ — 多項式行列の行列式
  • detr — 多項式の行列式
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Last updated:
Mon Feb 12 23:12:40 CET 2018