Znn3bq.jpeg
²é¿´: 2967  |  »Ø¸´: 9

ÈØ·Æ77

½ð³æ (СÓÐÃûÆø)

ÈØ·Æ77

[ÇóÖú] ¹ØÓÚÓжϵãµÄÁ¬Ðøº¯ÊýÇóÆÚÍû ÒÑÓÐ1È˲ÎÓë

E£¨x£©=¡ÒxdF£¨x£©=¡Ò1-F£¨x£©dx
          ÆäÖÐxµÄȡֵΪ0µ½ÎÞÇF£¨x£©Îª·Ö²¼º¯Êý

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

ÈØ·Æ77

½ð³æ (СÓÐÃûÆø)

ÈØ·Æ77

ÎÒÏëÖªµÀ£¬ÎªÊ²Ã´ÏÂÒ»¸ö¹«Ê½ÎªÊ²Ã´³ÉÁ¢£¿

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
2Â¥2015-03-28 09:33:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zaq123321

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

Can you write the eq and post a picture? Seems not clear.

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
Сľ³æ¸øÎÒÎÂů£¬¸øÎÒÏ£Íû£¬°®¾ÍÒª°®Ð¡Ä¾³æ¡£
3Â¥2015-03-28 18:44:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jabile

ľ³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÉèXÊǷǸºËæ»ú±äÁ¿£¬FÊÇ·Ö²¼º¯Êý£¬ÓÉ·Ö²¿»ý·Ö

¼ÙÉèXµÄÆÚÍû´æÔÚ£¬Ôò
Ç÷ÏòÓÚ0£¬¶ø

´Ó¶ø
4Â¥2015-03-28 21:41:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÈØ·Æ77

½ð³æ (СÓÐÃûÆø)

ÈØ·Æ77

ÒýÓûØÌû:
3Â¥: Originally posted by zaq123321 at 2015-03-28 18:44:58
Can you write the eq and post a picture? Seems not clear.

ÎÒÔÚÊÖ»úÉÏûÓп´µ½Õâ¸ö¹¦ÄÜ

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
5Â¥2015-03-29 07:27:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÈØ·Æ77

½ð³æ (СÓÐÃûÆø)

ÈØ·Æ77

ÒýÓûØÌû:
4Â¥: Originally posted by jabile at 2015-03-28 21:41:44
ÉèXÊǷǸºËæ»ú±äÁ¿£¬FÊÇ·Ö²¼º¯ÊýEX=\int_0^{\infty} x dF(x)=-\int_0^{\infty} x d(1-F(x))£¬ÓÉ·Ö²¿»ý·Ö
=-x(1-F(x))|_0^{\infty}+\int_0^{\infty} 1-F(x)dx
¼ÙÉèXµÄÆÚÍû´æÔÚ£¬Ôò
\int_x^{\infty} t dF(t)Ç÷ÏòÓÚ ...

ÇëÎÊÌÖÂÛ¼«ÏÞµÄÄDz¿·ÖÊÇÔõô»ØÊ£¿ÎÒÀí½âÓеãÀ§ÄÑ£¬Ð»Ð»

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
6Â¥2015-03-29 07:38:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÈØ·Æ77

½ð³æ (СÓÐÃûÆø)

ÈØ·Æ77

ÒýÓûØÌû:
4Â¥: Originally posted by jabile at 2015-03-28 21:41:44
ÉèXÊǷǸºËæ»ú±äÁ¿£¬FÊÇ·Ö²¼º¯ÊýEX=\int_0^{\infty} x dF(x)=-\int_0^{\infty} x d(1-F(x))£¬ÓÉ·Ö²¿»ý·Ö
=-x(1-F(x))|_0^{\infty}+\int_0^{\infty} 1-F(x)dx
¼ÙÉèXµÄÆÚÍû´æÔÚ£¬Ôò
\int_x^{\infty} t dF(t)Ç÷ÏòÓÚ ...

µ¹ÊýµÚ¶þÐÐÊÇÔõÃ´ÍÆµ½³öÀ´µÄ£¿

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
7Â¥2015-03-29 08:58:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jabile

ľ³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
7Â¥: Originally posted by ÈØ·Æ77 at 2015-03-29 08:58:34
µ¹ÊýµÚ¶þÐÐÊÇÔõÃ´ÍÆµ½³öÀ´µÄ£¿
...

t´Ó x µ½ÎÞÇî»ý·Ö£¬ËùÒÔt´óÓÚµÈÓÚx£¬Ö±½Ó´úÈë¾ÍÐÐ
ºóÃæÒ»¸öµÈʽ£¬¹ØÓÚt»ý·Ö£¬xÊdz£Êý£¬Ìáµ½»ý·ÖÍâÃæ
8Â¥2015-03-29 11:45:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÈØ·Æ77

½ð³æ (СÓÐÃûÆø)

ÈØ·Æ77

ÒýÓûØÌû:
8Â¥: Originally posted by jabile at 2015-03-29 11:45:26
t´Ó x µ½ÎÞÇî»ý·Ö£¬ËùÒÔt´óÓÚµÈÓÚx£¬Ö±½Ó´úÈë¾ÍÐÐ
ºóÃæÒ»¸öµÈʽ£¬¹ØÓÚt»ý·Ö£¬xÊdz£Êý£¬Ìáµ½»ý·ÖÍâÃæ...

ËùÒÔµÚÒ»¸ö²»µÈʽֻÓÃÌæ»»x£¬F£¨t£©±£³Ö²»±ä£¬¶Ô°É£¿

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
9Â¥2015-03-29 15:00:23
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÈØ·Æ77

½ð³æ (СÓÐÃûÆø)

ÈØ·Æ77

ÒýÓûØÌû:
8Â¥: Originally posted by jabile at 2015-03-29 11:45:26
t´Ó x µ½ÎÞÇî»ý·Ö£¬ËùÒÔt´óÓÚµÈÓÚx£¬Ö±½Ó´úÈë¾ÍÐÐ
ºóÃæÒ»¸öµÈʽ£¬¹ØÓÚt»ý·Ö£¬xÊdz£Êý£¬Ìáµ½»ý·ÖÍâÃæ...

ÎÒÌ«Åå·þÄãÁË£¡

[ ·¢×ÔСľ³æ¿Í»§¶Ë ]
10Â¥2015-03-29 15:02:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ÈØ·Æ77 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 267Çóµ÷¼Á +3 Ò»¸öÒ¶×Ózsw 2026-04-05 4/200 2026-04-11 11:23 by zhq0425
[¿¼ÑÐ] µç×ÓÐÅÏ¢270Çóµ÷¼Á +12 terminal469 2026-04-07 12/600 2026-04-11 11:19 by zhq0425
[¿¼ÑÐ] 295·ÖÇóµ÷¼Á +9 ?ÒªÉϰ¶? 2026-04-10 9/450 2026-04-11 10:48 by qingpingzhu
[¿¼ÑÐ] 284Çóµ÷¼Á +8 archer.. 2026-04-09 9/450 2026-04-11 10:35 by zhq0425
[¿¼ÑÐ] 288Çóµ÷¼Á +15 ´úfish 2026-04-09 16/800 2026-04-11 10:26 by wwj2530616
[¿¼ÑÐ] ÉúÎïѧ308Çóµ÷¼Á£¨Ò»Ö¾Ô¸»ª¶«Ê¦´ó£© +6 ÏàÐűػá¹ââÍòÕ 2026-04-10 6/300 2026-04-11 05:23 by zhuwenxu
[¿¼ÑÐ] 0703µ÷¼Á +19 ʰ¾ÁÒ¼ 2026-04-04 22/1100 2026-04-10 22:16 by bljnqdcc
[¿¼ÑÐ] 0856ר˶Çóµ÷¼Á Ï£ÍûÊÇaÇøÔºÐ£ +21 ºÃºÃÐÝÏ¢ºÃ²»ºÃ 2026-04-09 24/1200 2026-04-10 16:58 by luoyongfeng
[¿¼ÑÐ] ²ÄÁÏר˶³õÊÔ·Ö332Ò»Ö¾Ô¸Î÷±±¹¤Òµ´óѧ£¬ +12 ¹ÊÈË?? 2026-04-09 12/600 2026-04-09 18:34 by Ccclqqq
[¿¼ÑÐ] 332£¬085601Çóµ÷¼Á +12 ydfyh 2026-04-09 14/700 2026-04-09 17:28 by wp06
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤£¬Çóµ÷¼Á +11 won_qii 2026-04-07 11/550 2026-04-09 17:03 by luoyongfeng
[¿¼ÑÐ] 085400µç×ÓÐÅÏ¢Àࣨ´¨´ó¿ØÖƹ¤³Ì£©Çóµ÷¼Á¿É¿çרҵ ÇóÀÏʦÁªÏµ +3 626776879 2026-04-08 3/150 2026-04-09 16:05 by Öí»á·É
[¿¼ÑÐ] 280Çóµ÷¼Á +5 ÙâÙâÒ¹Ò¹ 2026-04-09 8/400 2026-04-09 11:15 by ÙâÙâÒ¹Ò¹
[¿¼ÑÐ] µç×ÓÐÅÏ¢346 +4 zuoshaodian 2026-04-08 4/200 2026-04-08 11:54 by zzucheup
[¿¼ÑÐ] 307Çóµ÷¼Á +3 Youth@@ 2026-04-07 3/150 2026-04-07 22:00 by hemengdong
[¿¼ÑÐ] ר˶085403£¬291·Ö£¬ÓÐÁ½Æª×¨Àû£¬Ò»¹úÒ»½± +3 ¹þ¼ªßä¹þ¼ªßä 2026-04-07 3/150 2026-04-07 18:21 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 325 µ÷¼Á +6 QQСϺ 2026-04-07 6/300 2026-04-07 15:17 by Ccclqqq
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +11 Ò»ÑùYWY 2026-04-07 11/550 2026-04-07 15:13 by shdgaomin
[¿¼ÑÐ] 081200-11408-367ѧ˶Çóµ÷¼Á +4 1_2_3111 2026-04-06 4/200 2026-04-07 08:13 by jp9609
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +14 Ò¼·¡·¡ÒÚ 2026-04-04 14/700 2026-04-05 23:31 by À´¿´Á÷ÐÇÓê10
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û