²é¿´: 1828  |  »Ø¸´: 11
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

Ë®»·¾³

Í­³æ (³õÈëÎÄ̳)

[ÇóÖú] ¸¶³öÎÒËùÓеĽð±ÒÇóÒ»¸ö΢·Ö·½³Ì£¬³É¹¦ºó·¢½ð±Ò

yy''+(y')^2=a+byy'+cy£¬µ±x=0ʱ£¬y=y'=0.Çó½âÒÔÉÏ΢·Ö·½³Ì£¬Ð´³ÉyÓëxµÄÒþº¯ÊýÒ²¿ÉÒÔ£¬Çëд³öÏêϸ¹ý³Ì¡£
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ë®»·¾³

Í­³æ (³õÈëÎÄ̳)

ÒýÓûØÌû:
4Â¥: Originally posted by »ªÀöµÄÆ®¹ý at 2013-08-16 23:59:34
MathmaticaµÄNDSolveÃüÁ¸ø³ö¾ßÌåµÄa£¬b£¬c£¬¿ÉÒÔ˳ÀûÇó³öÊýÖµ½âÀ´£¬£¨¾«¶ÈÒ»°ãºÜ¸ß£©Èç¹ûÄãÐèÒª£¬ÎÒ¿ÉÒÔ°ïÄã±à³Ì¡£¼ÇסÊÇÊýÖµ½âŶ£¬²»ÊǽâÎö½â

ÎÒÐèÒªµÄÊǽâÎö½â£¬²»¹ý»¹ÊǺÜллÄ㣡
5Â¥2013-08-17 11:13:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 12 ¸ö»Ø´ð

hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Ë®»·¾³: ½ð±Ò+1, ¡ïÓаïÖú, ·Ç³£¸Ðл£¡ 2013-08-16 08:06:07
Õâ²»ÊÇ´ð°¸.

ÒòΪ·½³Ì²»ÏÔº¬x, ËùÒÔÓñê×¼Ìæ»» p=y', ¼´ p/dy =1/dx.
ÓÚÊÇÔ­·½³Ìд³É:
d(yp)/dx = a + byp +cy, »òÕß˵ d(yp)/dy * p = a +b(yp) +cy. Áîw=yp, Òª½â dw/dy = (a+cy)/w +by. ¿ÉϧÎÒÎÞ·¨½â¸Ã·½³Ì, Áô´ý¸ßÊÖ³öÂí.
We_must_know. We_will_know.
2Â¥2013-08-16 07:20:48
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

pippi6

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

¹¤³ÌºÍ¿ÆÑ§ÊýÖµ¼ÆËã×Éѯ

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÎÒ¿´ÁË¿´£¬ºÃÏñÒþʽº¯Êý½ã²»Ì«ÈÝÒס£ÎÒ¸ãÁ˸ö¼¶Êý½â£¬²»ÖªÊÇ·ñÂú×ãÒªÇó¡£
¸¶³öÎÒËùÓеĽð±ÒÇóÒ»¸ö΢·Ö·½³Ì£¬³É¹¦ºó·¢½ð±Ò
¿ìÕÕ8.jpg


¸¶³öÎÒËùÓеĽð±ÒÇóÒ»¸ö΢·Ö·½³Ì£¬³É¹¦ºó·¢½ð±Ò-1
¿ìÕÕ5.jpg


¸¶³öÎÒËùÓеĽð±ÒÇóÒ»¸ö΢·Ö·½³Ì£¬³É¹¦ºó·¢½ð±Ò-2
¿ìÕÕ6.jpg


¸¶³öÎÒËùÓеĽð±ÒÇóÒ»¸ö΢·Ö·½³Ì£¬³É¹¦ºó·¢½ð±Ò-3
¿ìÕÕ7.jpg

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

3Â¥2013-08-16 18:59:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

»ªÀöµÄÆ®¹ý

°æÖ÷ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
MathmaticaµÄNDSolveÃüÁ¸ø³ö¾ßÌåµÄa£¬b£¬c£¬¿ÉÒÔ˳ÀûÇó³öÊýÖµ½âÀ´£¬£¨¾«¶ÈÒ»°ãºÜ¸ß£©Èç¹ûÄãÐèÒª£¬ÎÒ¿ÉÒÔ°ïÄã±à³Ì¡£¼ÇסÊÇÊýÖµ½âŶ£¬²»ÊǽâÎö½â
4Â¥2013-08-16 23:59:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 285Çóµ÷¼Á +6 ytter 2026-03-22 6/300 2026-03-22 12:09 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] ÄÜÔ´²ÄÁÏ»¯Ñ§¿ÎÌâ×éÕÐÊÕ˶ʿÑо¿Éú8-10Ãû +5 ÍÑÓ±¶ø³ö 2026-03-16 16/800 2026-03-22 11:20 by ÍÑÓ±¶ø³ö
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖпƼ¼´óѧ071000£¬Çóµ÷¼Á +4 ÑØ°¶Óб´¿Ç6 2026-03-21 4/200 2026-03-22 07:21 by ilovexiaobin
[¿¼ÑÐ] 269ר˶Çóµ÷¼Á +5 ½ð¶÷±´ 2026-03-21 5/250 2026-03-21 22:37 by zhyzzh
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤£¨0856£©304ÇóBÇøµ÷¼Á +3 Çñgl 2026-03-20 7/350 2026-03-21 19:05 by 15709483992
[¿¼ÑÐ] ¡¾¿¼Ñе÷¼Á¡¿»¯Ñ§×¨Òµ 281·Ö£¬Ò»Ö¾Ô¸ËÄ´¨´óѧ£¬³ÏÐÄÇóµ÷¼Á +11 ³Ô³Ô³Ô²ÅÓÐÒâÒå 2026-03-19 11/550 2026-03-21 18:23 by ѧԱ8dgXkO
[¿¼ÑÐ] 311Çóµ÷¼Á +3 Ó¸ҵÄСÎâ 2026-03-20 3/150 2026-03-21 17:40 by ColorlessPI
[¿¼ÑÐ] 0805²ÄÁÏ320Çóµ÷¼Á +3 ÉÎïÓï 2026-03-20 3/150 2026-03-21 15:46 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 22 350 ±¾¿Æ985Çóµ÷¼Á£¬ÇóÀϵÇÊÕÁô +3 ÀîéóÄÐ003 2026-03-20 3/150 2026-03-21 13:28 by ²«»÷518
[¿¼ÑÐ] 085601µ÷¼Á 358·Ö +3 zzzzggh 2026-03-20 4/200 2026-03-21 10:21 by luoyongfeng
[¿¼ÑÐ] 306Çóµ÷¼Á +4 chuanzhu´¨Öò 2026-03-18 4/200 2026-03-21 08:25 by laoshidan
[¿¼ÑÐ] 070300»¯Ñ§319Çóµ÷¼Á +7 ½õÀð0909 2026-03-17 7/350 2026-03-21 03:46 by JourneyLucky
[¿¼ÑÐ] 083200ѧ˶321·ÖÒ»Ö¾Ô¸ôßÄÏ´óѧÇóµ÷¼Á +3 innocenceF 2026-03-17 3/150 2026-03-21 02:35 by JourneyLucky
[¿¼ÑÐ] 265Çóµ÷¼Á +9 ÁºÁºÐ£Ð£ 2026-03-17 9/450 2026-03-21 02:17 by JourneyLucky
[¿¼ÑÐ] 350Çóµ÷¼Á +5 weudhdk 2026-03-19 5/250 2026-03-20 22:04 by luoyongfeng
[¿¼ÑÐ] Ò»Ö¾Ô¸ÎäÀí²ÄÁϹ¤³Ì348Çóµ÷¼Á +3 £þ^£þ©bº¹ 2026-03-19 4/200 2026-03-20 21:01 by zhukairuo
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +3 ÄÝÄÝninicgb 2026-03-17 3/150 2026-03-18 10:29 by macy2011
[¿¼ÑÐ] 334Çóµ÷¼Á +3 Ö¾´æ¸ßÔ¶ÒâÔÚ»úÐ 2026-03-16 3/150 2026-03-18 08:34 by lm4875102
[¿¼ÑÐ] [µ¼Ê¦ÍƼö]Î÷ÄϿƼ¼´óѧ¹ú·À/²ÄÁϵ¼Ê¦ÍƼö +3 ¼â½ÇСºÉ 2026-03-16 6/300 2026-03-16 23:21 by ¼â½ÇСºÉ
[¿¼ÑÐ] 0856Çóµ÷¼Á +3 ÁõÃÎ΢ 2026-03-15 3/150 2026-03-16 10:00 by houyaoxu
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û