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Scilabヘルプ >> Polynomials > inv_coeff

inv_coeff

係数を指定して多項式行列を作成

呼び出し手順

P = inv_coeff(C)
P = inv_coeff(C, d)
P = inv_coeff(C, d, varname)

パラメータ

C

係数の行列

d

多項式行列の次数. オプションのパラメータでデフォルト値は d=-1+size(C,'c')/size(C,'r')

varname

多項式の変数名を指定する文字列 (デフォルト値: 'x').

説明

P=inv_coeff(Mp,k)は, kMp の 大きさと互換性がある場合, k次の多項式行列を返します. C=[C0,C1,...,Ck] の時, P= C0 + C1*x +... +Ck*x^kとなります.

A = int(10*rand(2,6))
// 1次の多項式行列を作成
P = inv_coeff(A, 1)
norm(coeff(P)-A)

// 次数にデフォルト値を使用
P1 = inv_coeff(A)
norm(coeff(P1) - A)

参照

  • poly — Polynomial definition from given roots or coefficients, or characteristic to a square matrix.
  • degree — 多項式行列の次数
  • coeff — 多項式行列の係数
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