Scilab Website | Contribute with GitLab | Mailing list archives | ATOMS toolboxes
Scilab Online Help
2025.0.0 - English


acosm

matrix wise cosine inverse

Syntax

t = acosm(x)

Arguments

x

a real or complex square matrix.

t

a real or complex square matrix.

Description

t are cosine inverse of the x matrix. Diagonalization method is used. For non-symmetric 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
Report an issue
<< acoshm Matrix-wise processing asinhm >>

Copyright (c) 2022-2024 (Dassault Systèmes)
Copyright (c) 2017-2022 (ESI Group)
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Thu Oct 24 11:13:08 CEST 2024