| ²é¿´: 919 | »Ø¸´: 5 | ||
| µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû | ||
Ä«ÓðÑïгæ (СÓÐÃûÆø)
|
[ÇóÖú]
ÇóÖúÒ»¸öº¯ÊýµÄ·´Laplace±ä»» ÒÑÓÐ1È˲ÎÓë
|
|
|
Ïóº¯ÊýΪ£º S(x,t)=cosh(kx)/[s*cosh(kL)] ÇóÔº¯Êý |
» ²ÂÄãϲ»¶
²ÄÁϵ÷¼Á
ÒѾÓÐ5È˻ظ´
081700 µ÷¼Á 267·Ö
ÒѾÓÐ8È˻ظ´
Çë½ÌÏ´ó¼Ò 2026Äê¹ú¼Ò»ù½ðÉêÇëÊÇ˫äÉóÂð£¿
ÒѾÓÐ5È˻ظ´
276Çóµ÷¼Á¡£ÓаëÄêµç³ØºÍ°ëÄê¸ß·Ö×Óʵϰ¾Àú
ÒѾÓÐ10È˻ظ´
Ò»Ö¾Ô¸ÄϺ½²ÄÁÏר317·ÖÇóµ÷¼Á
ÒѾÓÐ4È˻ظ´
Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
ÉúÎïѧѧ˶Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
284Çóµ÷¼Á
ÒѾÓÐ10È˻ظ´
һ־Ըɽ¶«´óѧҩѧѧ˶Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
07»¯Ñ§280·ÖÇóµ÷¼Á
ÒѾÓÐ4È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
Ä«Óð“PÝp
гæ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 14.5
- Ìû×Ó: 11
- ÔÚÏß: 2.6Сʱ
- ³æºÅ: 1670200
- ×¢²á: 2012-03-06
- רҵ: µç»¯Ñ§
4Â¥2015-08-03 16:42:49
peterflyer
ľ³æÖ®Íõ (ÎÄѧ̩¶·)
peterflyer
- ÊýѧEPI: 10
- Ó¦Öú: 20282 (Ժʿ)
- ½ð±Ò: 146172
- ºì»¨: 1374
- Ìû×Ó: 93091
- ÔÚÏß: 7694.3Сʱ
- ³æºÅ: 1482829
- ×¢²á: 2011-11-08
- ÐÔ±ð: GG
- רҵ: ¹¦ÄÜÌÕ´É
2Â¥2015-08-03 15:11:21
peterflyer
ľ³æÖ®Íõ (ÎÄѧ̩¶·)
peterflyer
- ÊýѧEPI: 10
- Ó¦Öú: 20282 (Ժʿ)
- ½ð±Ò: 146172
- ºì»¨: 1374
- Ìû×Ó: 93091
- ÔÚÏß: 7694.3Сʱ
- ³æºÅ: 1482829
- ×¢²á: 2011-11-08
- ÐÔ±ð: GG
- רҵ: ¹¦ÄÜÌÕ´É
3Â¥2015-08-03 15:15:22
peterflyer
ľ³æÖ®Íõ (ÎÄѧ̩¶·)
peterflyer
- ÊýѧEPI: 10
- Ó¦Öú: 20282 (Ժʿ)
- ½ð±Ò: 146172
- ºì»¨: 1374
- Ìû×Ó: 93091
- ÔÚÏß: 7694.3Сʱ
- ³æºÅ: 1482829
- ×¢²á: 2011-11-08
- ÐÔ±ð: GG
- רҵ: ¹¦ÄÜÌÕ´É
|
Õâ¸öÖ±½ÓÇó½âÎö½â¿ÉÄܲ»Ì«¿ÉÄÜ¡£ÄÜ·ñÕâÑù´¦ÀíÄØ£¿ Ôʽ=1/s*exp[(a-b)*sqrt(s)]*{1+exp[-2*a*sqrt(s)]}/{1+exp[-2*b*sqrt(s)]} =1/s*exp[(a-b)*sqrt(s)]*{1+exp[-2*a*sqrt(s)]}*{1-exp[-2*b*sqrt(s)]+exp[-4*b*sqrt(s)]+exp[-6*b*sqrt(s)]-exp[-8*b*sqrt(s)]+......} ÕâÑùµÃµ½µÄ¶¼ÊÇÐÎÈç exp[k*sqrt(s)]/sµÄÐÎʽ£¬Ö»²»¹ýkµÄÖµ¸÷²»Ïàͬ¡£¶ø²éÀʽ·´±ä»»±íºÍÀʽ±ä»»µÄ»ý·ÖÐÔÖÊ£¬exp[k*sqrt(s)]/sµÄ·´±ä»»¿ÉÒÔ²é±íµÃµ½µÄ¡£ |
5Â¥2015-08-03 17:26:15













»Ø¸´´ËÂ¥