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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 This page might be outdated.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 > acoshm

acoshm

matrix hyperbolic inverse cosine

Calling Sequence

t = acoshm(x)

Arguments

x, t

a real or complex square matrix.

Description

acoshm is the matrix hyperbolic inverse cosine of the matrix x. Uses the formula t=logm(x+(x+eye())*sqrtm((x-eye())/(x+eye()))). For non-symmetric matrices result may be inaccurate.

Examples

A=[1,2;3,4];
coshm(acoshm(A))
A(1,1)=A(1,1)+%i;
coshm(acoshm(A))

See Also

  • acosh — hyperbolic cosine inverse
  • logm — square matrix logarithm
  • sqrtm — matrix square root
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Last updated:
Wed Apr 01 10:13:53 CEST 2015