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Scilab help >> 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(numer(wtf),denom(wtf),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(numer(wtfbis),denom(wtfbis),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
• pdiv — 多項式の除算
 Report an issue << lcmdiag Polynomials numer >>

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