²é¿´: 208  |  »Ø¸´: 6
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£
¡¾ÐüÉͽð±Ò¡¿»Ø´ð±¾ÌûÎÊÌ⣬×÷ÕßÂäÑ©½«ÔùËÍÄú 18 ¸ö½ð±Ò
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

ÂäÑ©

ľ³æ (ÕýʽдÊÖ)

[ÇóÖú] ½áÊøÌáÎÊ£¬¿Éɾ

½áÊøÌáÎÊ£¬Ã»ÓÐÂúÒâ´ð°¸

[ Last edited by ÂäÑ© on 2007-6-28 at 21:23 ]

» ²ÂÄãϲ»¶

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

superjerryny

¡ï ¡ï
ÂäÑ©(½ð±Ò+2):лл»Ø¸´
Â¥Ö÷ÄãÕâÑù˵£¬ÎÒ»¹ÊÇûÃ÷°×£¬Äã¸ø¸ö¾ßÌåµÄI£¨n£©±í´ïʽ°É¡£×Ô±äÁ¿µ½µ×Óм¸¸ö£¿Èç¹û°´ÄãÕâô˵£¬¼ÙÈçI£¨0£©=0£¬I£¨n£©=n*I£¨0£©£¬ÄÇÄãÕâÎÊÌâ²»¾ÍÊÇÇóI£¨0£»x1,x2,...xk)=0Âð
4Â¥2007-06-22 19:36:52
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 7 ¸ö»Ø´ð

superjerryny

IÓëx1,x2...xnÖ®¼äµÄº¯Êý¹ØÏµ¾ßÌåÊÇʲô£¿I(n)ÀïÃæÕâ¸önÊǺ¯ÊýµÄÒ»¸öʲôÑùµÄ²ÎÊý£¿Â¥Ö÷Äã×îºÃ˵Ïêϸһµã°¡
2Â¥2007-06-22 00:16:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÂäÑ©

ľ³æ (ÕýʽдÊÖ)

I(n)ÊÇÕýÏÒºÍÓàÏÒº¯ÊýµÄ¼Ó¼õ³Ë»ý£¬nÊÇÀïÃæµÄ³£Êý£¬I(n)µÄÐÎʽ²î²»¶à£¬Ö»ÓÐnÈ¡²»Í¬Öµ
3Â¥2007-06-22 10:04:50
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÂäÑ©

ľ³æ (ÕýʽдÊÖ)

»¹Óи½¼ÓÌõ¼þÊÇI£¨0£©+I£¨n)µÄºÍÊÇ×î´ó¡£±äÁ¿µÄ¸öÊýÊÇÓÉÎïÀíÉϵIJÎÊý¾ö¶¨µÄ¡£I£¨n) µÄ±í´ïʽ£º
   I(n)=(1/n/pi)^2*((ÇóºÍ£ºk´Ó1µ½Ò»¸ö³£Êý£º£¨-1£©^k*sin(2*pi*n*xk))^2+(1+ÇóºÍ£ºk ´Ó1µ½Ò»¸ö³£Êý£¨-1£©^k*cos(2*pi*n*xk))^2) n µÄȡֵҲÊÇÓÉÎïÀíÌõ¼þ¾ö¶¨£¬È¡5ʱҪÇóI£¨5£©=I£¨4£©=I(3)=I(2)=I(1)=I£¨0£©£¬ I£¨0£©µÄ±í´ïʽΪ£º
  I£¨0)=(1+ÇóºÍ£ºk´Ó1µ½Ò»¸ö³£Êý£¨-1)^k*xk)
5Â¥2007-06-25 08:44:33
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²»Ó¦Öú È·¶¨»ØÌûÓ¦Öú (×¢Ò⣺ӦÖú²Å¿ÉÄܱ»½±Àø£¬µ«²»ÔÊÐí¹àË®£¬±ØÐëÌîд15¸ö×Ö·ûÒÔÉÏ)
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 340Çóµ÷¼Á +3 »°Ã·ÌÇ111 2026-03-24 3/150 2026-03-24 17:47 by hyzs6688
[¿¼ÑÐ] Çóµ÷¼Á +5 ÁÖ֮Ϧ 2026-03-24 5/250 2026-03-24 17:16 by dick_runner
[¿¼ÑÐ] 070300»¯Ñ§Çóµ÷¼Á +9 Ô·¶¹¶¹ 2026-03-20 9/450 2026-03-24 17:15 by licg0208
[¿¼²©] 26É격×Ô¼ö +3 whh869393 2026-03-24 3/150 2026-03-24 09:55 by 21018060
[¿¼ÑÐ] 291Çóµ÷¼Á +8 hhhhxn.. 2026-03-23 8/400 2026-03-23 23:15 by peike
[¿¼ÑÐ] 333Çóµ÷¼Á +3 ALULU4408 2026-03-23 3/150 2026-03-23 19:04 by macy2011
[¿¼ÑÐ] 291 Çóµ÷¼Á +4 »¯¹¤2026½ì±ÏÒµÉ 2026-03-21 5/250 2026-03-23 16:46 by »¯¹¤2026½ì±ÏÒµÉ
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤085600£¬×Ü·Ö304£¬±¾¿ÆÓÐÁ½Æªsci²ÎÓ룬Çóµ÷¼Á +4 ÐÒÔ˵Ľ´½´ 2026-03-22 5/250 2026-03-22 20:15 by edmund7
[¿¼ÑÐ] 324Çóµ÷¼Á +6 luckyѽѽѽѼ 2026-03-20 6/300 2026-03-22 16:01 by ColorlessPI
[¿¼ÑÐ] 354Çóµ÷¼Á +7 Tyoumou 2026-03-18 10/500 2026-03-22 11:11 by ÈËÀ´Ê¢
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖпƼ¼´óѧ071000£¬Çóµ÷¼Á +4 ÑØ°¶Óб´¿Ç6 2026-03-21 4/200 2026-03-22 07:21 by ilovexiaobin
[¿¼ÑÐ] »¯Ñ§µ÷¼Á +5 yzysaa 2026-03-21 5/250 2026-03-21 22:12 by peike
[¿¼ÑÐ] Ò»Ö¾Ô¸¶«»ª´óѧ¿ØÖÆÑ§Ë¶320Çóµ÷¼Á +3 Grand777 2026-03-21 3/150 2026-03-21 19:23 by ¼òÖ®-
[¿¼ÑÐ] ²ÄÁÏ 271Çóµ÷¼Á +5 Õ¹ÐÅÔÃ_ 2026-03-21 5/250 2026-03-21 17:29 by ѧԱ8dgXkO
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤£¨0856£©304Çó BÇø µ÷¼Á +3 Çñgl 2026-03-21 3/150 2026-03-21 13:47 by lature00
[¿¼ÑÐ] 085601µ÷¼Á 358·Ö +3 zzzzggh 2026-03-20 4/200 2026-03-21 10:21 by luoyongfeng
[¿¼ÑÐ] 296Çóµ÷¼Á +6 www_q 2026-03-18 10/500 2026-03-20 23:56 by JourneyLucky
[¿¼ÑÐ] 308Çóµ÷¼Á +3 °¢½ã°¢½ã¼Ò°¡ 2026-03-18 3/150 2026-03-20 23:24 by JourneyLucky
[¿¼ÑÐ] 288Çóµ÷¼Á£¬Ò»Ö¾Ô¸»ªÄÏÀí¹¤´óѧ071005 +5 ioodiiij 2026-03-17 5/250 2026-03-19 18:22 by zcl123
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤µ÷¼Á 324·Ö +10 llllkkkhh 2026-03-18 12/600 2026-03-19 14:33 by llllkkkhh
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û