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jjdg: ½ð±Ò+1, ¸Ðл²ÎÓë 2013-07-22 00:49:15
samhx: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú, Ì«ÏÛĽţÈËÁË£¬´óÔÞ 2013-07-25 21:12:57
function solvenonl
clear all;clc
x0=100*[1 1 1];
x=fsolve(@nonl,x0)


function f=nonl(x)
F1=x(1);
F2=x(2);
F3=x(3);
f(1)=F1^(2/3)+3.75*F2^(2/3)-2.75*F3^(2/3);
f(2)=F2-3.75*F1+196.8;
f(3)=F3+2.75*F1-448.9;

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x =

   80.6164  105.5114  227.2049

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2Â¥2013-07-21 22:49:32
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zyxzyh921

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samhx: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£ÏÛĽ°¡£¬¸ãѧÊõµÄºÃÈË 2013-07-25 21:13:29
±¾ÌûÄÚÈݱ»ÆÁ±Î

3Â¥2013-07-22 10:19:52
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ÒýÓûØÌû:
3Â¥: Originally posted by zyxzyh921 at 2013-07-22 10:19:52
Ö±½Óд£º
=solve('x1^2/3+3.75*x2^2/3-2.75*x3^2/3=0','x2=3.75*x1-196.8','x3=-2.75*x1+448.9')
µÃµ½½á¹û£º
x1 =

  93.993030742840714792347444854146
-132.08373283012724230657894390538


x2 =
...

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      ¡°x1^2/3+3.75*x2^2/3-2.75*x3^2/3=0¡±
°´ÕÕÔ­·½³Ì£¬Ó¦¸ÃÕâÑùÊäÈë°É£º
      ¡°x1^(2/3)+3.75*x2^(2/3)-2.75*x3^(2/3)=0¡±
MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
4Â¥2013-07-22 10:37:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zyxzyh921

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5Â¥2013-07-22 19:44:01
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samhx

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ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
[157.47,393.71,15.86]
7Â¥2013-12-06 10:13:39
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