24СʱÈÈÃŰæ¿éÅÅÐаñ    

²é¿´: 1068  |  »Ø¸´: 4
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

¹âÓëàÅ

гæ (³õÈëÎÄ̳)

[ÇóÖú] Çó´óÉñÄâºÏÒ»¸öʱÖÍ΢·Ö·½³Ì£¬²»Ê¤¸Ð¼¤£¬Êý¾Ý·Ö±ð¶ÔÓ¦t x y¡£

dx/dt=x*(k*sin(w*t)-3.5*x+0.5*x(t-0.1)+0.5*x(t-0.2)+0.05*y(t-0.3)+0.05*y(t-0.4))
dy/dt=y*(l*sin(u*t)-4*y+0.6*y(t-0.2)+0.6*y(t-0.1)+0.05*x(t-0.4)+0.05*x(t-0.2))
t          x          y
1999      0.4839    1.5139
2000      4.674     4.1868
2001      1.0501    2.555
2002      2.3323    0.5724
2003      3.1562    3.5341
2004      17.2848   12.5552
2005      51.8524   6.4077
2006      79.8377   15.2467
2007      146.9956  25.2808
2008      314.96778 59.1078
2009      390.5913  96.31
2010      509.5823  91.86
2011      694.2673  83.17
2012      719.47706 76.4728

Çó´óÉñÄâºÏÒ»¸öʱÖÍ΢·Ö·½³Ì£¬²»Ê¤¸Ð¼¤£¬Êý¾Ý·Ö±ð¶ÔÓ¦t   x   y¡£


·¢×ÔСľ³æAndroid¿Í»§¶Ë
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Math¶Öé

ľ³æ (ÖªÃû×÷¼Ò)

ÄãºÃ£¬ÄãÓÐʱÖÍ΢·Ö·½³Ì·½ÃæÂÛÎĵÄlatexÄ£°åÂð£¿Çó·ÖÏí¡­Ð»Ð»¡­???

·¢×ÔСľ³æAndroid¿Í»§¶Ë
4Â¥2016-03-14 17:09:20
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 5 ¸ö»Ø´ð

¹âÓëàÅ

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
1Â¥: Originally posted by ¹âÓëàÅ at 2015-12-25 13:48:12
dx/dt=x*(k*sin(w*t)-3.5*x+0.5*x(t-0.1)+0.5*x(t-0.2)+0.05*y(t-0.3)+0.05*y(t-0.4))
dy/dt=y*(l*sin(u*t)-4*y+0.6*y(t-0.2)+0.6*y(t-0.1)+0.05*x(t-0.4)+0.05*x(t-0.2))
t          x          y
1999      0.483 ...

1stoptÒªÊÇ¿ÉÒÔ£¬ÎÒÄÜÓ㬲»Ê¤¸Ð¼¤£¡

·¢×ÔСľ³æAndroid¿Í»§¶Ë
2Â¥2015-12-25 13:52:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

¹âÓëàÅ

гæ (³õÈëÎÄ̳)

3Â¥2015-12-26 10:54:07
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÍõÒ׺£·å

гæ (Ö°Òµ×÷¼Ò)

ÇëÎÊÄãÕâ¸öÎÊÌâ½â¾öÁËÂð

·¢×ÔСľ³æAndroid¿Í»§¶Ë
5Â¥2021-07-22 17:26:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8.O.55.1.O.5.4,¿ÆÄ¿È«,¿É+¼± +3 7K1CJE38xLG4 2026-08-25 4/200 2026-08-26 02:04 by cNXvBfCpiZOM
[ÂÛÎÄͶ¸å] ÊÛSCIÒ»ÇøT0PÎÄÕ£¬ÎÒ:8O.55.1.O.5.4,¿ÆÄ¿ÆëÈ«,¿É+¼± +3 7K1CJE38xLG4 2026-08-25 4/200 2026-08-26 02:04 by cNXvBfCpiZOM
[»ù½ðÉêÇë] Ã÷ÌìÓ¦¸Ã¿É²éÁË£¡£¿ +6 chengyan1220 2026-08-23 6/300 2026-08-25 19:45 by zfd97
[»ù½ðÉêÇë] ÓÐûÓдóÉñ°ïÎÒ¿´¿´»ù½ð´úÂë 28+4 1234567wang 2026-08-24 10/500 2026-08-25 19:15 by lfy8008
[»ù½ðÉêÇë] ijЩ»ú¹¹£¬ÒÔЧÂʵÍΪÈÙ£¬ÒÔЧÂʵÍ×÷Ϊ´æÔڸР+9 yuleib84 2026-08-25 10/500 2026-08-25 17:14 by alexon
[»ù½ðÉêÇë] 2026¹ú×ÔÈ»º¯ÆÀ·Ñµ½ÕË +20 ÑòÑü°å 2026-08-21 23/1150 2026-08-25 16:34 by zsna
[»ù½ðÉêÇë] ½ñÈÕ²»·Å°ñ£¿Íø´«¹ú×ÔȻԤ¼Æ 8 Ô 27 Èտɲé½á¹û +17 ҽѧÀÏÄк¢ 2026-08-20 22/1100 2026-08-25 15:36 by ҽѧÀÏÄк¢
[»ù½ðÉêÇë] Èç¹û´Ë¿ÌÄãÕýÔÚΪ¹ú»ù¸Ðµ½½¹ÂÇ£¬²»·ÁÀ´ÌýÌýÕâÊס¶»ù½ðÖ®Íâ¡· +8 scalable 2026-08-24 8/400 2026-08-25 12:52 by jnhyjjm
[»ù½ðÉêÇë] ûÓÐÈκÎÏûÏ¢-ÊDz»ÊǾÍÁ¹ÁË +9 ͼÀ²Í¼À² 2026-08-24 10/500 2026-08-25 11:59 by ÄϺ£Ð¡¸ç
[»ù½ðÉêÇë] ÈËÆø²»ÐÐÁË +11 fansofjerry 2026-08-21 11/550 2026-08-25 11:04 by ¹Â¶ÀµÄÓ¢ÐÛ6
[»ù½ðÉêÇë] 2026ÄêµÄ¹ú¼ÒÉç¿Æ»ù½ðÏîĿͨѶÆÀÉóµÄйæÔòÓëж¯Ïò¡¢ÐÂÌôÕ½ +5 process2012 2026-08-23 7/350 2026-08-25 09:42 by huixian257
[»ù½ðÉêÇë] ½ñÌì»ù½ð»á³ö½á¹ûÂð£¿20260819 +17 kkkl_v 2026-08-19 18/900 2026-08-25 09:41 by windflowerwy
[»ù½ðÉêÇë] ÎÒÃæÉÏÍêµ°ÁË +13 ÇÒÌý»¢Ð¥ 2026-08-20 14/700 2026-08-25 09:10 by mrkang
[»ù½ðÉêÇë] Ö»ÓÐÿÄêÕâÖÖʱºòÀ´¹ä¹äСľ³æ +25 yaoyewhu2008 2026-08-20 27/1350 2026-08-25 08:01 by Equinoxhua
[»ù½ðÉêÇë] ÄÜ·ñÍ˳ö²ÎÓëµÄÃæÉÏÏîÄ¿½â³ýÏÞÏî +21 koalala 2026-08-24 24/1200 2026-08-24 19:25 by ¼ÒÓëÔ¶·½
[»ù½ðÉêÇë] filecode£¬4¸öjtjcÁË +14 ziyangfang 2026-08-19 17/850 2026-08-24 18:37 by ¹þ¹þ¸ò£¿
[»ù½ðÉêÇë] ½¨Òé»ù½ð·¢²¼Ìáǰ¸ø³öÃ÷È·µÄʱ¼äµã +13 kulium 2026-08-21 16/800 2026-08-24 16:27 by superceng
[»ù½ðÉêÇë] ÈÃÎÒÖÐÒ»¸öÃæÉϰɣ¡ +13 ´óƼ1987 2026-08-20 16/800 2026-08-24 10:23 by ̫ɵÁË
[»ù½ðÉêÇë] ¿ÆÑй¶ùÌ«ÄÑÁË +18 ÎÒ4´ó°×²Ë 2026-08-20 19/950 2026-08-24 09:47 by ¿­¶÷¹ãÊ¢´ß»¯·ÖÎ
[»ù½ðÉêÇë] ¿´À´½ñÌì²»»á·Å°ñÁË£¿ +8 chengyan1220 2026-08-21 11/550 2026-08-21 17:52 by dcqxinyang
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û