Znn3bq.jpeg
ÉÇÍ·´óѧº£Ñó¿ÆÑ§½ÓÊܵ÷¼Á
²é¿´: 1724  |  »Ø¸´: 11
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

zhoulon

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

[ÇóÖú] ÕâÁ½¸ö»ý·ÖÄÜ»ý³öÀ´Âð£¿×îºÃÓÐÏêϸ²½Öè ÒÑÓÐ6È˲ÎÓë

ÈçͼƬËùʾ£¬Ð»Ð»¡£

ÕâÁ½¸ö»ý·ÖÄÜ»ý³öÀ´Âð£¿×îºÃÓÐÏêϸ²½Öè
11.jpg
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

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

peterflyer

ľ³æÖ®Íõ (ÎÄѧ̩¶·)

peterflyer


¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
feixiaolin: ½ð±Ò+1 2015-08-27 19:18:16
ÒýÓûØÌû:
10Â¥: Originally posted by peterflyer at 2015-08-25 13:34:23
(1)²ÉÓ÷ֲ½»ý·Ö·¨¡£
V=y*(Lny)^2-Integral{y*2*Lny*1/y*dy}
  =y*(Lny)^2-2*y*Lny+2*Integral{y*1/y*dy}
=y*(Lny)^2-2*y*Lny+2*y+C

´Ó¸Õ²ÅÓò»¶¨»ý·ÖµÄ½á¹û¿´£¬ÔÚÁãµã´¦µÄ»ý·Ö²»´æÔÚ£¬Òò´ËÔ­¶¨»ý·ÖÊDz»´æÔڵġ£
11Â¥2015-08-25 13:37:33
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 12 ¸ö»Ø´ð

feixiaolin

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÓÅÐã°æÖ÷

½¨Ò飺
S=0.5*Integrate[sqrt(1+y^2)d(ln(y))^2] £¬²¿·Ö·Öʽչ¿ª£¬¶ÔºóÒ»ÏîÈ¡y=tan(t)
VÈ¡ y=exp(t)
2Â¥2015-08-23 20:37:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhoulon

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

·Ç³£¸Ðл£¬¸Õ²Å×Ô¼ºÓÃmatlabµÄ·ûºÅº¯Êý°ÑµÚÒ»¸ö»ý³öÀ´ÁË
H*(lnH)*2+2H*lnH+2H
µÚ¶þ¸ö·ûºÅº¯ÊýÒ²»ý·Ö²»³öÀ´£¬ÄѵÀÕæ»ý·Ö²»³ö¾ßÌåµÄ±í´ïʽ£¿
3Â¥2015-08-23 20:55:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Mr__Right

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
zhoulon: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú 2015-08-27 18:57:05
ÒýÓûØÌû:
3Â¥: Originally posted by zhoulon at 2015-08-23 20:55:15
·Ç³£¸Ðл£¬¸Õ²Å×Ô¼ºÓÃmatlabµÄ·ûºÅº¯Êý°ÑµÚÒ»¸ö»ý³öÀ´ÁË
H*(lnH)*2+2H*lnH+2H
µÚ¶þ¸ö·ûºÅº¯ÊýÒ²»ý·Ö²»³öÀ´£¬ÄѵÀÕæ»ý·Ö²»³ö¾ßÌåµÄ±í´ïʽ£¿

ÏÈÒª¿¼ÂÇÊDz»ÊÇ·¢É¢²»ÊÕÁ²

Äã±»»ýº¯ÊýÔÚ0¸½½ü»ý·Ö·¢É¢

´ÖÂÔ¿´±»»ýº¯ÊýµÄ¼¶±ð

ÀàËÆµÄ¼òµ¥»ý·ÖͬÑùÎÞ·¨Çó³öÀ´£¬¼´Ê¹Çó²»¶¨»ý·ÖµÄʱºòÔ­º¯Êý´æÔÚ£º

»òÕß


ÄãÕâµÚ¶þ¸ö±»»ýº¯ÊýÀàËÆ·¢É¢
ÎÄÕÂÄËÉíÍâÖ®Îï,Òª¶à¿¼ÂDZ༭¡¢Éó¸åÈ˺ͶÁÕߵĸÐÊÜ¡£
4Â¥2015-08-24 07:32:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] BÇø0809 £¬ÊýÒ»Ó¢Ò»£¬290 Çóµ÷¼Á +3 ãöΫ1111 2026-04-12 4/200 2026-04-13 20:35 by ѧԱJpLReM
[¿¼ÑÐ] 290Çóµ÷¼Á +18 ¿Â»´È» 2026-04-12 20/1000 2026-04-13 12:56 by cyh¡ª315
[¿¼ÑÐ] Ò»Ö¾Ô¸»ª¹¤085600 331·Ö +7 ÌìÏÂww 2026-04-09 7/350 2026-04-13 09:01 by lhj2009
[˶²©¼ÒÔ°] ÐÂÒ»´úµç×ÓÐÅÏ¢294Çóµ÷¼Á ²»ÌôѧУ +7 Ytyt11 2026-04-09 8/400 2026-04-12 16:57 by ajpv·çÀ×
[¿¼ÑÐ] µçÆø¹¤³Ìר˶320Çóµ÷¼Á +5 СÂé×Ó111 2026-04-10 5/250 2026-04-12 10:47 by zhouyuwinner
[¿¼ÑÐ] 085410 273Çóµ÷¼Á +10 X1999 2026-04-09 10/500 2026-04-12 09:24 by ÄæË®³Ë·ç
[¿¼ÑÐ] 303Çóµ÷¼Á +14 SereinQ 2026-04-10 15/750 2026-04-11 20:43 by À¶ÔÆË¼Óê
[¿¼ÑÐ] ũѧ0904 312Çóµ÷¼Á +3 Say Never 2026-04-11 3/150 2026-04-11 17:22 by daydayup2005
[¿¼ÑÐ] Çóµ÷¼Á£¬Ò»Ö¾Ô¸´óÁ¬Àí¹¤´óѧ354·Ö +5 ÓêÉùÓàÉú 2026-04-11 6/300 2026-04-11 16:12 by ÓêÉùÓàÉú
[¿¼ÑÐ] µ÷¼Á +5 ÎĵÀÐÇ̨ 2026-04-11 5/250 2026-04-11 15:01 by ¿­¿­Òª±ä˧
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤329·ÖÇóµ÷¼Á +16 Ò¶zilin 2026-04-10 16/800 2026-04-11 11:04 by may_ÐÂÓî
[¿¼ÑÐ] 0854µ÷¼Á +5 ÒôÏñµêÌý»¨¹ÄÏ· 2026-04-10 5/250 2026-04-11 10:49 by qingpingzhu
[¿¼ÑÐ] ¹¤¿Æ273µ÷¼Á +6 X1999 2026-04-09 7/350 2026-04-11 10:23 by zhq0425
[¿¼ÑÐ] 297Çóµ÷¼Á +9 Kwgyz 2026-04-09 9/450 2026-04-11 10:09 by zhq0425
[¿¼ÑÐ] Ò»Ö¾Ô¸¾©Çø985£¬085401µç×ÓÐÅÏ¢£¬±¾¿Æµç×ÓÐÅÏ¢ +3 Ñô¹â¿ªÀʵÄÄк¢ 2026-04-10 3/150 2026-04-10 16:29 by sophia_93
[¿¼ÑÐ] ¿¼Ñе÷¼Á-²ÄÁÏÀà-284 +28 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 28/1400 2026-04-09 20:08 by µ¹Êý321?
[¿¼ÑÐ] 334Çóµ÷¼Á +16 Riot2025 2026-04-08 17/850 2026-04-09 09:28 by wdyheheeh
[¿¼ÑÐ] ÉúÎïѧѧ˶£¬³õÊÔ351·Ö£¬Çóµ÷¼Á +4 ¡­¡«¡¢Íõ¡­¡« 2026-04-08 5/250 2026-04-08 21:49 by limeifeng
[¿¼ÑÐ] 313Çóµ÷¼Á +3 Ê®Áùʰ½ 2026-04-07 3/150 2026-04-07 23:20 by lbsjt
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷µç085401Çóµ÷¼Á +4 sunw1306 2026-04-07 4/200 2026-04-07 16:40 by à£à£à£0119
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û