±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 2090  |  »Ø¸´: 9
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

yeahnet117

½ð³æ (ÕýʽдÊÖ)

[½»Á÷] À­ÆÕÀ­Ë¹ÊÕÁ²Óò

ÇëÎÊcost£¬t´óÓÚ0µÄÀ­ÆÕÀ­Ë¹µ¥±ßÊÕÁ²ÓòÔõôÇó£¬Ð¡°×£¬´óÉñ¼ûÁÂ

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yeahnet117

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
4Â¥: Originally posted by feixiaolin at 2014-08-19 17:33:27
cost=/2
exp(jt)ºÍexp(-jt) ÊÓΪ exp(s_0*t)
exp(jt)<----------------->1/(s-j)     Rs>0
exp(-jt)<----------------->1/(s+j)   Rs>0
×ÛÉÏ£¬À­ÆÕÀ­Ë¹µ¥±ßÊÕÁ²Óò   Rs>0...

°Ñj¿´³ÉaµÄ»°£¬exp(at)µÄµ¥±ßÊÕÁ²ÓòÊÇre(s)´óÓÚaËùÒÔÕâÀïµÄ»°²»¾ÍÊÇre(s)´óÓÚj»òÕß-jÂð¿ÉÊÇÎÒÒ²ÖªµÀreÊÇʵÊý£¬²»¶Ô

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
6Â¥2014-08-19 20:50:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 10 ¸ö»Ø´ð

yeahnet117

½ð³æ (ÕýʽдÊÖ)

Ù¼´óµÄÐÅÏ¢°æ¿é¾ÍôÈ˻شðÒ»ÏÂÂðÔÙ¼Ó5¸ö½ð±Ò

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

2Â¥2014-08-19 11:26:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yeahnet117

½ð³æ (ÕýʽдÊÖ)

Ëͺ컨һ¶ä
ÒýÓûØÌû:
2Â¥: Originally posted by yeahnet117 at 2014-08-19 11:26:06
Ù¼´óµÄÐÅÏ¢°æ¿é¾ÍôÈ˻شðÒ»ÏÂÂðÔÙ¼Ó5¸ö½ð±Ò

´óÉñÔÚÄÄ

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
3Â¥2014-08-19 11:27:14
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

feixiaolin

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÓÅÐã°æÖ÷

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
yeahnet117: ½ð±Ò+5 2014-08-19 20:52:09
cost=[exp(jt)+exp(-jt)]/2
exp(jt)ºÍexp(-jt) ÊÓΪ exp(s_0*t)
exp(jt)<----------------->1/(s-j)     Rs[s]>0
exp(-jt)<----------------->1/(s+j)   Rs[s]>0
×ÛÉÏ£¬À­ÆÕÀ­Ë¹µ¥±ßÊÕÁ²Óò   Rs[s]>0
4Â¥2014-08-19 17:33:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ±¾¿Æ211×Ü·Ö289£¬08¹¤Ñ§ÕæÐÄÇóµ÷¼Á +3 utopiaE 2026-03-30 3/150 2026-03-30 23:42 by ms629
[¿¼ÑÐ] 303Çóµ÷¼Á +7 DLkz1314. 2026-03-30 7/350 2026-03-30 21:07 by peike
[¿¼ÑÐ] Ò»Ö¾Ô¸Ö£´ó²ÄÁϹ¤³Ì290Çóµ÷¼Á +11 Youth_ 2026-03-30 11/550 2026-03-30 21:01 by peike
[¿¼ÑÐ] 281Çóµ÷¼Á +5 ÑÇ¿ËÎ÷good 2026-03-26 7/350 2026-03-30 20:42 by dophin1985
[¿¼ÑÐ] 262Çóµ÷¼Á +4 ZZ..000 2026-03-30 4/200 2026-03-30 15:57 by wangjy2002
[¿¼ÑÐ] ±¾¿Æ211ÉúÎïҽѧ¹¤³Ì085409Çóµ÷¼Á339·Ö +3 Àï×Óľyy 2026-03-29 3/150 2026-03-30 13:29 by gyzj2026
[¿¼ÑÐ] 290Çóµ÷¼Á +3 dfffsar 2026-03-29 3/150 2026-03-29 22:38 by ëë밢Ī2
[¿¼ÑÐ] һ־Ը˫һÁ÷»úе285·ÖÇóµ÷¼Á +4 ÐÒÔ˵ÄÈýľ 2026-03-29 5/250 2026-03-29 14:49 by Miko19
[¿¼ÑÐ] 086000ÉúÎïÓëÒ½Ò©µ÷¼Á +5 Feisty¡£ 2026-03-28 9/450 2026-03-29 12:02 by longlotian
[¿¼ÑÐ] 0856²ÄÁÏ»¯¹¤µ÷¼Á ×Ü·Ö330 +14 zhubinhao 2026-03-27 14/700 2026-03-29 10:01 by Sjndkwm
[¿¼ÑÐ] 11408Èí¼þ¹¤³ÌÇóµ÷¼Á +3 Qiuѧing 2026-03-28 3/150 2026-03-28 21:50 by zhq0425
[¿¼ÑÐ] 070300Çóµ÷¼Á306·Ö +4 26ÒªÉϰ¶ 2026-03-27 4/200 2026-03-28 13:06 by ÌÆãå¶ù
[¿¼ÑÐ] 352·Ö »¯¹¤Óë²ÄÁÏ +5 º£Äɰٴ¨Ly 2026-03-27 5/250 2026-03-28 03:39 by fmesaito
[¿¼ÑÐ] 0856µ÷¼Á +5 ÇóÇóÈÃÎÒÓÐÊé¶Á° 2026-03-26 6/300 2026-03-27 15:12 by caszguilin
[¿¼ÑÐ] 316Çóµ÷¼Á +5 Pigcasso 2026-03-24 5/250 2026-03-27 12:10 by zhshch
[¿¼ÑÐ] 292Çóµ÷¼Á +4 ÇóÇóÁËÊÕÏÂÎÒ°É£ 2026-03-26 4/200 2026-03-27 10:37 by zhshch
[¿¼ÑÐ] 324Çóµ÷¼Á +5 hanamiko 2026-03-26 5/250 2026-03-27 10:33 by wangjy2002
[¿¼ÑÐ] »úеѧ˶310·Ö£¬ÊýÒ»Ó¢Ò»£¬Ò»Ö¾Ô¸211±¾¿ÆË«·ÇÕÒµ÷¼ÁÐÅÏ¢ +3 @357 2026-03-25 3/150 2026-03-26 16:34 by by.MENG
[¿¼ÑÐ] 347Çóµ÷¼Á +4 L when 2026-03-25 4/200 2026-03-25 13:37 by cocolv
[¿¼ÑÐ] 277·ÖÇóµ÷¼Á£¬¿çµ÷²ÄÁÏ +3 ¿¼Ñе÷¼Álxh 2026-03-24 3/150 2026-03-24 13:52 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û