Name
acoshm — matrix hyperbolic inverse cosine
Calling Sequence
t=acoshm(x)
Parameters
- x,t
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))