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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 This page might be outdated.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 > Trigonometry > acosm

acosm

matrix wise cosine inverse

Calling Sequence

t=acosm(x)

Arguments

x

real or complex square matrix

t

real or complex square matrix

Description

t are cosine inverse of the x matrix. Diagonalization method is used. For nonsymmetric matrices result may be inaccurate.One has t=-%i*logm(x+%i*sqrtm(eye()-x*x))

Examples

A=[1,2;3,4];
cosm(acosm(A))

See Also

  • acos — element wise cosine inverse (radians)
  • sqrtm — matrix square root
  • logm — square matrix logarithm
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Last updated:
Thu May 12 11:44:14 CEST 2011