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Scilabヘルプ >> Elementary Functions > Trigonometry > cosm

cosm

行列余弦関数

呼び出し手順

t = cosm(x)

引数

x

実数または複素数の正方行列

説明

cosm(x) は, 行列xの余弦行列 t=0.5*(expm(%i*x)+expm(-%i*x))です.

A=[1,2;3,4]
cosm(A)-0.5*(expm(%i*A)+expm(-%i*A))

参照

  • cos — 余弦関数
  • expm — 正方行列の指数関数
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