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Scilabヘルプ >> Elementary Functions > Exponential > sqrtm

sqrtm

行列の平方根

呼び出し手順

y=sqrtm(x)

引数

x

実数または複素数の正方行列

説明

y = sqrtm(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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<< sqrt Exponential Floating point >>

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Last updated:
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