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Scilabヘルプ >> Polynomials > chepol

chepol

チェビシェフ多項式

呼び出し手順

Tn = chepol(n, var)

パラメータ

n

整数 : 多項式の次数

var

文字列 : 多項式の変数

Tn

変数 varの多項式

説明

チェビシェフ多項式の再帰的実装. T0=1 および T1=poly(0,var)とした Tn=2*poly(0,var)*chepol(n-1,var)-chepol(n-2,var).

for i = 1:10, p = chepol(i, "x"); disp(p), end
--> for i = 1:10, p = chepol(i, "x"); disp(p), end
  x

  -1 +2x²

  -3x +4x³

  1 -8x² +8x⁴

  5x -20x³ +16x⁵

  -1 +18x² -48x⁴ +32x⁶

  -7x +56x³ -112x⁵ +64x⁷

  1 -32x² +160x⁴ -256x⁶ +128x⁸

  9x -120x³ +432x⁵ -576x⁷ +256x⁹

  -1 +50x² -400x⁴ +1120x⁶ -1280x⁸ +512x¹⁰
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