Znn3bq.jpeg
²é¿´: 1334  |  »Ø¸´: 4

wangybcn

½û³æ (ÕýʽдÊÖ)

±¾ÌûÄÚÈݱ»ÆÁ±Î

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

supervb

Ìú¸Ëľ³æ (ÎÄ̳¾«Ó¢)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
wangybcn: ½ð±Ò+20, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ÑÔ¼òÒâêà 2015-02-09 17:34:38
P(A>B)=P(A-B>0)£¬(-B)·þ´ÓÕý̬·Ö²¼N(-¦Ì2,¦Ò2^2)£¬A+(-B)·þ´ÓÕý̬·Ö²¼N(¦Ì1-¦Ì2,¦Ò1^2+¦Ò2^2)£¬
¸ù¾ÝA-BµÄ¸ÅÂÊÃܶȲé±í»ò»ý·Ö¼ÆËãP(A-B>0)µÄ¸ÅÂʼ´¿É¡£
ÔÛÊÇ×ö·ÇÏßÐÔËæ»ú¶¯Á¦Ñ§µÄÓ´
2Â¥2015-02-09 10:45:12
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

math2000

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÎÊÌâ²»ÇåÎú£¬ËµÃ÷Â¥Ö÷»ù±¾¸ÅÄîºÜ²î£¡»òÕßÊDZÊÎó
A¡¢B²»ÊÇʼþ£¬¶øÊÇËæ»ú±äÁ¿
ÔÚ¦Ì1,¦Ò1£¬¦Ì2,¦Ò2ÒÑÖªµÄÇé¿öÏ£¬3¥˵µÃºÜÇå³þÁË¡£Èç¹ûδ֪£¬¿Ï¶¨Ëã²»³öÀ´£¬³ý·Ç¦Ì1=¦Ì2£¬´Ëʱ¸ÅÂÊΪi0.5
3Â¥2015-02-09 11:08:10
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wangybcn

½û³æ (ÕýʽдÊÖ)

±¾ÌûÄÚÈݱ»ÆÁ±Î

4Â¥2015-02-09 17:30:17
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wangybcn

½û³æ (ÕýʽдÊÖ)

±¾ÌûÄÚÈݱ»ÆÁ±Î

5Â¥2015-02-09 17:30:40
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ wangybcn µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼ÁѧУ +14 ²»»á³ÔÈâ 2026-04-13 16/800 2026-04-15 21:59 by noqvsozv
[¿¼ÑÐ] 291 Çóµ÷¼Á +40 »¯¹¤2026½ì±ÏÒµÉ 2026-04-09 41/2050 2026-04-15 21:54 by noqvsozv
[¿¼ÑÐ] ¿ÒÇëÓÐѧУÊÕÁô +5 ¿Â»´È» 2026-04-12 5/250 2026-04-15 21:49 by noqvsozv
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖÐũҵ071010£¬320Çóµ÷¼Á +11 À§À§À§À§À¤À¤ 2026-04-14 12/600 2026-04-15 18:58 by zhuwenxu
[¿¼ÑÐ] 0854µ÷¼Á +13 ³¤¹­°Á 2026-04-12 16/800 2026-04-15 13:45 by fenglj492
[¿¼ÑÐ] 310Çóµ÷¼Á +16 666ÕæºÃ 2026-04-11 18/900 2026-04-15 13:28 by ºÚ¿Æ¼¼¿óÒµ
[¿¼ÑÐ] µ÷¼ÁÇóÊÕÁô +34 ¹ûÈ»ÓÐÎÒ 2026-04-10 35/1750 2026-04-15 13:05 by Î÷±±Íû¡ª·çɳ
[¿¼ÑÐ] 211±¾¿Æ²ÄÁÏ»¯¹¤Çóµ÷¼Á +19 YHLAH 2026-04-11 23/1150 2026-04-14 22:25 by fenglj492
[¿¼ÑÐ] ¿¼ÑÐÇóµ÷¼Á +12 ×ÓľÄÅ 2026-04-12 13/650 2026-04-14 01:19 by Íõ¬Bè±
[¿¼ÑÐ] ²ÄÁϸ´ÊÔÇóµ÷¼Á +24 xhhdjdjsjks 2026-04-09 24/1200 2026-04-13 15:49 by ÐÒÃâ ..
[¿¼ÑÐ] Ò»Ö¾Ô¸085802 323·ÖÇóµ÷¼Á +13 drizzle_9 2026-04-12 14/700 2026-04-13 10:26 by Faiz5552
[¿¼ÑÐ] 22408µ÷¼Á315·Ö +3 zhuangyan123 2026-04-09 3/150 2026-04-12 00:25 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 352 Çóµ÷¼Á +6 yzion 2026-04-11 8/400 2026-04-11 16:24 by Ã÷Ô´ËʱÓÐ
[¿¼ÑÐ] Ò»Ö¾Ô¸985»úеѧ˶380Çóµ÷¼Á +5 ¹Ø¹ØöÂð¯10 2026-04-11 5/250 2026-04-11 10:10 by ÖªÄî¡£A
[¿¼ÑÐ] 282£¬Çóµ÷¼Á +12 jggshjkkm 2026-04-09 14/700 2026-04-11 09:39 by Öí»á·É
[¿¼ÑÐ] Ò»Ö¾Ô¸¶«±±´óѧ¿ØÖƹ¤³Ì085406Êý¶þÓ¢¶þ385£¬Çóµ÷¼Á +8 Ezra_Zhang 2026-04-09 8/400 2026-04-11 09:15 by Öí»á·É
[¿¼ÑÐ] 368Çóµ÷¼Á +3 17385968172 2026-04-10 3/150 2026-04-10 20:12 by µç×Ӱµ±ë
[¿¼ÑÐ] Ò»Ö¾Ô¸»¦9£¬326ÉúÎïѧÇóÏà¹Ø×¨Òµµ÷¼Á +4 Áõīī 2026-04-09 4/200 2026-04-10 12:07 by pengliang8036
[¿¼ÑÐ] 085601³õÊÔ330·ÖÕÒµ÷¼Á +10 Á÷ÐÄÄ̻ưül 2026-04-09 10/500 2026-04-10 08:14 by Sammy2
[¿¼ÑÐ] ³õÊÔ·Ö332£¬Ò»Ö¾Ô¸±¨¿¼Î÷±±¹¤Òµ´óѧ£¬ +11 ¹ÊÈË?? 2026-04-09 11/550 2026-04-09 21:54 by JineShine
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û