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Scilabヘルプ >> Polynomials > ldiv

# ldiv

### 呼び出し手順

`[x]=ldiv(n,d,k)`

n,d

k

### 説明

`x=ldiv(n,d,k)` は, `n``d`による長除算の 最初の`k`個の係数を出力します. すなわち,有理行列`[nij(z)/dij(z)]`の無限大近傍での テイラー展開を出力します.

`nij/dij`の展開の係数は `x((i-1)*n+k,j) k=1:n`に保存されます

### 例

```wss = ssrand(1,1,3);
[a,b,c,d] = abcd(wss);
wtf = ss2tf(wss);
x1 = ldiv(wtf.num, wtf.den, 5)
x2 = [c*b ; c*a*b ; c*a^2*b ; c*a^3*b ; c*a^4*b]
wssbis = markp2ss(x1',5,1,1);
wtfbis = clean(ss2tf(wssbis))
x3 = ldiv(wtfbis.num, wtfbis.den, 5)```

### 参照

• arl2 — L2伝達関数近似による SISO モデル実現
• markp2ss — マルコフパラメータを状態空間に変換
• pfss — 部分分数分解
• pdiv — 多項式の除算
 Report an issue << lcmdiag Polynomials pdiv >>

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