File: cosm.man

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.TH cosm G "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
cosm -  matrix cosine function
.SH CALLING SEQUENCE
.nf
t=cosm(x)
.fi
.SH PARAMETERS
.TP 10
x
: real or complex square  matrix
.SH DESCRIPTION
\fVcosm(x)\fR is  the matrix cosine of the x matrix. 
\fVt=0.5*(expm(%i*x)+expm(-%i*x))\fR.
.SH EXAMPLE
.nf
A=[1,2;3,4]
cosm(A)-0.5*(expm(%i*A)+expm(-%i*A))
.fi
.SH SEE ALSO
cos, expm