http://www.mapleprimes.com/questions/36758-How-Can-I-Convert-A-DAE-System-With en-us 2026 Maplesoft, A Division of Waterloo Maple Inc. Maplesoft Document System Sat, 13 Jun 2026 20:01:22 GMT Sat, 13 Jun 2026 20:01:22 GMT The latest answers and comments added to the Question, how can I convert a DAE system with complex initial condition to a real system? http://www.mapleprimes.com/images/mapleprimeswhite.jpg http://www.mapleprimes.com/questions/36758-How-Can-I-Convert-A-DAE-System-With http://www.mapleprimes.com/questions/36758-How-Can-I-Convert-A-DAE-System-With?ref=Feed:MaplePrimes:how can I convert a DAE system with complex initial condition to a real system?:Comments#answer63524 <p>Write each complex variable in terms of its real and imaginary parts.&nbsp; Each equation splits into two, one for the real part and one for the imaginary part.&nbsp; For example: if the original system is <b>sys</b> with variables <b>x(t)</b> and <b>y(t)</b>, your new system, using variables <b>xre(t), xim(t), yre(t), yim(t)</b>, is </p> <pre> &gt; newsys:= map(eq -&gt; (evalc(Re(eq)), evalc(Im(eq))), eval(sys, {x(t) = xre(t) + I*xim(t), y(t) = yre(t) + I*yim(t)})); </pre> <p>&nbsp;</p> <p>&nbsp;</p> <p>Write each complex variable in terms of its real and imaginary parts.&nbsp; Each equation splits into two, one for the real part and one for the imaginary part.&nbsp; For example: if the original system is <b>sys</b> with variables <b>x(t)</b> and <b>y(t)</b>, your new system, using variables <b>xre(t), xim(t), yre(t), yim(t)</b>, is </p> <pre> &gt; newsys:= map(eq -&gt; (evalc(Re(eq)), evalc(Im(eq))), eval(sys, {x(t) = xre(t) + I*xim(t), y(t) = yre(t) + I*yim(t)})); </pre> <p>&nbsp;</p> <p>&nbsp;</p> 63524 Sun, 06 Sep 2009 23:24:21 Z Robert Israel Robert Israel