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## Re: complex integral or multiple integral

 From: John Smith Subject: Re: complex integral or multiple integral Date: Wed, 1 Mar 2000 08:47:30 +0000 (GMT)

```A small part of your problem is solved by doing
doing Octave integrals with commands like

octave>  quad("sin",0,3*pi)
ans = 2.000000000

If you want to do complex integrals you need to a sequence of
commands like

function a = my_complex_function(t)
a = exp(i*t) ;
endfunction

function ar = real_part( t )
ar = real( my_complex_function( t )) ;
endfunction

function ai = imag_part( t )
ai = imag( my_complex_function( t )) ;
endfunction

real_integral = quad( "real_part", here, there ) ;
imag_integral = quad( "imag_part", here, there ) ;

complex_answer = real_integral + imag_integral ;

Hope this sheds some light,

John

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