mf_re.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{smcl}
{* 28mar2005}{...}
{cmd:help mata Re()}
{hline}
{* index Re()}{...}
{* index Im()}{...}
{* index real part}{...}
{* index imaginary part}{...}

{title:Title}

{p 4 8 2}
{bf:[M-5] Re() -- Extract real or imaginary part}


{title:Syntax}

{p 8 12 2}
{it:real matrix}{bind:  }
{cmd:Re(}{it:numeric matrix Z}{cmd:)}

{p 8 12 2}
{it:real matrix}{bind:  }
{cmd:Im(}{it:numeric matrix Z}{cmd:)}


{title:Description}

{p 4 4 2}
{cmd:Re(}{it:Z}{cmd:)}
returns a real matrix containing the real part of {it:Z}.  {it:Z} may be
real or complex.

{p 4 4 2}
{cmd:Im(}{it:Z}{cmd:)}
returns a real matrix containing the imaginary part of {it:Z}.  {it:Z} may be
a real or complex.  If {it:Z} is real, {cmd:Im(}{it:Z}{cmd:)} returns a 
matrix of zeros.



{title:Conformability}

    {cmd:Re(}{it:Z}{cmd:)}, {cmd:Im(}{it:Z}{cmd:)}:
		{it:Z}:  {it:r x c}
	   {it:result}:  {it:r x c}


{title:Diagnostics}

{p 4 4 2}
{cmd:Re(}{it:Z}{cmd:)}, if {it:Z} is real, literally returns {it:Z} and 
not a copy of {it:Z}.  This makes execution of {cmd:Re()} applied to 
real arguments instant.


{title:Source code}

{p 4 4 2}
{cmd:Re()} and {cmd:Im()}
are built-in.


{title:Also see}

{p 4 13 2}
Manual:  {hi:[M-5] Re()}

{p 4 13 2}
Online:  help for 
{bf:{help mf_c:[M-4] C()}};
{bf:{help m4_utility:[M-4] utility}}
{p_end}