²é¿´: 5405  |  »Ø¸´: 2

ghostsyd

Í­³æ (СÓÐÃûÆø)

[ÇóÖú] MatlabÖйØÓÚnlinfitº¯Êý²ÎÊýÉ趨µÄÌÖÂÛ ÒÑÓÐ1È˲ÎÓë

´ó¼ÒºÃ£¬ÓиöÎÊÌâÏëÇë½Ì¸÷λ´óÉñ¡£

ÔÚÓÃnlinfitº¯Êý×öÄâºÏµÄʱºòÈçºÎÏÞÖÆ²ÎÊýµÄ·¶Î§ÄØ£¿

±ÈÈçy = ax+b +cx2+d/x. ÎÒÏëÇ¿ÖÆa>0, »òÕßaºÍb±ØÐëͬºÅ(¾ùΪÕýÊý»î¾ùΪ¸ºÊý)¡£ÓÐûÓÐ°ì·¨ÄØ£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÎïÀíÃÃ×ÓÉ˲»Æð¡£¡£¡£¡£¡£
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÔÂÖ»À¶

Ö÷¹ÜÇø³¤ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ghostsyd: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú 2015-08-21 00:16:54
ÓÃ lsqnonlin(@ObjFunc,k0,lb,ub);  
lb ºÍ ub¿ÉÒÔ¶¨Òå²ÎÊýµÄȡֵ·¶Î§£¬±ÈÈçÁ½¸ö²ÎÊýaºÍb
lb=[0 0];
ub=[+inf +inf];
ÕâÑùa b¾ù´óÓÚ0£¬Í¬ÎªÕý
ÀàËÆµØ£¬
lb=[0 0];
ub=[-inf -inf];
ÕâÑùa b¾ùСÓÚ0£¬Í¬Îª¸º
MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
2Â¥2015-05-25 15:05:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ghostsyd

Í­³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by ÔÂÖ»À¶ at 2015-05-25 15:05:06
ÓÃ lsqnonlin(@ObjFunc,k0,lb,ub);  
lb ºÍ ub¿ÉÒÔ¶¨Òå²ÎÊýµÄȡֵ·¶Î§£¬±ÈÈçÁ½¸ö²ÎÊýaºÍb
lb=;
ub=;
ÕâÑùa b¾ù´óÓÚ0£¬Í¬ÎªÕý
ÀàËÆµØ£¬
lb=;
ub=;
ÕâÑùa b¾ùСÓÚ0£¬Í¬Îª¸º

ллÄú£¡
ÎïÀíÃÃ×ÓÉ˲»Æð¡£¡£¡£¡£¡£
3Â¥2015-08-21 00:19:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ghostsyd µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 278Çóµ÷¼Á +3 ÎÒ¿ÉÒÔÉϰ¶µÄ¶Ô 2026-03-19 3/150 2026-03-25 09:50 by ÎíÉ¢ºóÏàÓölc
[¿¼ÑÐ] 292Çóµ÷¼Á +3 ¶ì¶ì¶ì¶î¶î¶î¶î¶ 2026-03-25 3/150 2026-03-25 07:45 by ms629
[¿¼ÑÐ] 085601Çóµ÷¼Á×Ü·Ö293Ó¢Ò»Êý¶þ +3 ¸ÖÌú´óÅÚ 2026-03-24 3/150 2026-03-24 22:03 by bingxueer79
[¿¼ÑÐ] ÊÕ08µ÷¼ÁÉú +6 komorebi69 2026-03-18 6/300 2026-03-24 19:09 by Íô£¡£¿£¡
[¿¼ÑÐ] 321Çóµ÷¼Á +4 Ymlll 2026-03-24 4/200 2026-03-24 14:44 by sprinining
[¿¼²©] 26É격×Ô¼ö +3 whh869393 2026-03-24 3/150 2026-03-24 09:55 by 21018060
[¿¼ÑÐ] 276Çóµ÷¼Á¡£ÓаëÄêµç³ØºÍ°ëÄê¸ß·Ö×Óʵϰ¾­Àú +9 ²ÄÁÏѧ257Çóµ÷¼Á 2026-03-23 10/500 2026-03-24 07:36 by wangy0907
[¿¼ÑÐ] 333Çóµ÷¼Á +3 ALULU4408 2026-03-23 3/150 2026-03-23 19:04 by macy2011
[¿¼ÑÐ] 336Çóµ÷¼Á +4 ÊÕµ½VS 2026-03-20 4/200 2026-03-23 19:02 by macy2011
[¿¼ÑÐ] ¹¤¿Æ0856Çóµ÷¼Á +5 ãåÎö͡͡ 2026-03-21 5/250 2026-03-23 17:56 by º£ÉªÞ±-
[¿¼ÑÐ] 0854µç×ÓÐÅÏ¢Çóµ÷¼Á 324 +3 Promise-jyl 2026-03-23 3/150 2026-03-23 13:43 by wangkm
[¿¼ÑÐ] Çóµ÷¼Á²ÄÁÏѧ˶080500£¬×Ü·Ö289·Ö 5+3 @taotao 2026-03-19 21/1050 2026-03-23 10:17 by ¹Úc¸ç
[¿¼ÑÐ] Ò»Ö¾Ô¸070300Õã´ó»¯Ñ§358·Ö£¬Çóµ÷¼Á£¡ +4 ËÖËÖÓã.. 2026-03-21 4/200 2026-03-23 08:12 by Iveryant
[¿¼ÑÐ] Çóµ÷¼ÁԺУÐÅÏ¢ +6 CX 330 2026-03-21 6/300 2026-03-22 15:25 by ÎÞи¿É»÷111
[¿¼ÑÐ] 354Çóµ÷¼Á +7 Tyoumou 2026-03-18 10/500 2026-03-22 11:11 by ÈËÀ´Ê¢
[¿¼ÑÐ] 085601µ÷¼Á 358·Ö +3 zzzzggh 2026-03-20 4/200 2026-03-21 10:21 by luoyongfeng
[¿¼ÑÐ] Ò»Ö¾Ô¸ÎäÀí²ÄÁÏ305·ÖÇóµ÷¼Á +6 ÏëÉϰ¶µÄÀðÓã 2026-03-18 7/350 2026-03-21 01:03 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÄÏʦ´ó 070300£¨»¯Ñ§£©304·ÖÇóµ÷¼Á +3 0703ÎäÜ·»ÛÑ©304 2026-03-18 3/150 2026-03-21 00:48 by JourneyLucky
[¿¼ÑÐ] 321Çóµ÷¼Á +9 ºÎÈó²É123 2026-03-18 11/550 2026-03-20 23:19 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷°²½»Í¨´óѧ ѧ˶ 354Çóµ÷¼Á211»òÕß˫һÁ÷ +3 ÎÒÏëÒª¶ÁÑо¿Éú 2026-03-20 3/150 2026-03-20 20:13 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û