Scilab Home page | Wiki | Bug tracker | Forge | Mailing list archives | ATOMS | File exchange
Please login or create an account
Change language to: Français - Português - 日本語 - Русский
Scilab Help >> Elementary Functions > Trigonometry > Matrix-wise processing > acosm

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
Scilab Enterprises
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Thu Feb 14 14:57:13 CET 2019