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function f=fun(x) f1=11.87-x(1)*(1-1/(14.2971*x(1)^0.5*x(3)-1.6884*x(1))) f2=13.03-x(2)*(1-1/(14.2971*x(2)^0.5*x(3)-1.6884*x(2))) f3=10^3.94/10^4.25-(x(1)^0.5/x(2)^0.5)*((14.2971*x(2)^0.5*x(3)-1.6884*x(2))/(1 4.2971*x(1)^0.5*x(3)-1.6884*x(1)))*exp(-1.6884*x(1)/(14.2971*x(1)^0.5*x(3)-1.6 884*x(1))+1.6884*x(2)/(14.2971*x(2)^0.5*x(3)-1.6884*x(2))); f=f1^2+f2^2+f3^2 ÎÒÔÚÓÃlaqnonlinÀ´½âÉÏÃæµÄ·ÇÏßÐÔ·½³Ì×éʱ£¬×ÜÊÇÌáʾ Maximum number of function evaluations exceeded. Increase OPTIONS.MaxFunEvals. ÎÒÌá¸ßÁËÕâ¸öMaxFunEvals£¬ µ«ÊÇÓÖ³öÏÖ aximum number of iterations exceeded. Increase OPTIONS.MaxIter. ÔÚÌá¸ßÕâ¸öMaxIter£¬¾ÍÓÖ³öÏÖÒªÇóÌá¸ßÄǸöMaxFunEvals£¬ Çë½Ì¸ßÊÖÄܲ»ÄÜͬʱÌá¸ß°¡£¿ »òÕßÄÄλ´óÏÀ°ïÎÒ¿´¿´ÓÃʲôº¯ÊýºÃ£¿ÎÒ×ÜÊǵò»³öÕýÈ·Öµ¡£ ÕýȷֵΪ13.2 13.6 0.604 |
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2Â¥2010-05-17 20:49:29
wullww
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luoqiquan(½ð±Ò+1):thank you 2010-05-17 21:37:31
luoqiquan(½ð±Ò+1):thank you 2010-05-17 21:37:31
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shisong
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4Â¥2010-05-17 22:32:05
yqx1985
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dongdong3881(½ð±Ò+2):¶àл½»Á÷ 2010-05-18 13:20:29
shisong(½ð±Ò+5):ÏëÎÊÏ£¬1stOptÊÇʲô¶«¶«£¿ 2010-05-18 14:31:23
dongdong3881(½ð±Ò+2):¶àл½»Á÷ 2010-05-18 13:20:29
shisong(½ð±Ò+5):ÏëÎÊÏ£¬1stOptÊÇʲô¶«¶«£¿ 2010-05-18 14:31:23
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====== ½á¹û====== º¯Êý±í´ïʽ£º 11.87-a*(1-1/(14.2971*a^0.5*c-1.6884*a))-(0*13.03-b*(1-1/(14.2971*b^0.5*c-1.6884*b))=0*10^3.94/10^4.25 -(a^0.5/b^0.5)*((14.2971*b^0.5*c-1.6884*b)/(14.2971*a^0.5*c-1.6884*a))*exp(-1.6884*a/(14.2971*a^0.5 *c-1.6884*a)+1.6884*b/(14.2971*b^0.5*c-1.6884*b))=0) Ä¿±êº¯ÊýÖµ:0 a: 10.9442719099992 b: 4.00628424249589 c: 3.50613043053752 ======¼ÆËã½áÊø ====== ÓÃmatlabµÄ»°£¬ÄãÒªÉèÖÃÆðʼµãµÈ²ÎÊý£¬ÉèÖò»ºÃ½á¹û¾Í²»ºÃ¡£ 1stOpt¿ÉÒÔ±ÜÃâÄÇЩ [ Last edited by yqx1985 on 2010-5-18 at 09:22 ] |

5Â¥2010-05-18 09:18:46
yqx1985
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¡ï ¡ï ¡ï
luoqiquan(½ð±Ò+3):thank you very much 2010-05-21 18:44:18
shisong(½ð±Ò+10):ллŶ 2010-06-11 12:35:17
luoqiquan(½ð±Ò+3):thank you very much 2010-05-21 18:44:18
shisong(½ð±Ò+10):ллŶ 2010-06-11 12:35:17
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6Â¥2010-05-21 17:03:58
kuangfg1987
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mingdong(½ð±Ò+3):¸Ðл½»Á÷£¡ 2010-05-23 22:15:34
shisong(½ð±Ò+10):ллŶ 2010-06-11 12:35:26
mingdong(½ð±Ò+3):¸Ðл½»Á÷£¡ 2010-05-23 22:15:34
shisong(½ð±Ò+10):ллŶ 2010-06-11 12:35:26
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7Â¥2010-05-22 17:01:37
qinjiacai
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8Â¥2013-12-19 21:00:06
gulingpi
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9Â¥2014-11-14 14:48:53
gulingpi
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- ×¢²á: 2013-07-22
10Â¥2014-11-14 14:50:15














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