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Please note that the recommended version of Scilab is 6.0.1. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Elementary Functions > sqrtm

sqrtm

行列の平方根

呼び出し手順

y=sqrtm(x)

パラメータ

x

実数または複素数の正方行列

説明

y=sqrt(x) は行列xの 平方根行列となります(x=y^2). x が対称でない場合, 結果は不正確となる可能性があります.

x=[0 1;2 4]
w=sqrtm(x); 
norm(w*w-x)
x(1,2)=%i;
w=sqrtm(x);norm(w*w-x,1)

参照

  • expm — 正方行列の指数関数
  • sqroot — W*W' エルミート分解
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Last updated:
Thu Mar 03 11:00:51 CET 2011