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religanth

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[½»Á÷] ¡¾ÇóÖú¡¿¸ßµÈÊýѧ¶¨»ý·Ö¡¾ÒÑÍê½á¡¿ ÒÑÓÐ1È˲ÎÓë

exp(-ax^2)ÔõÑùÔÚ£¨m,n£©Çø¼ä½øÐж¨»ý·Ö£¿a£¬m£¬nΪ³£Êý£¬Ïêϸ²½Öèлл£¡£¡

[ Last edited by ÓàÔó³É on 2010-8-28 at 12:15 ]
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minggx

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religanth(½ð±Ò+5):Õâ¸öÄÜÓÃÊýѧ¹«Ê½ÐÎʽ³ÂÁгöÀ´Â𣿠лл£¡ 2010-08-27 17:17:36
ÔÚÎÒÕâÑùµÄ¸ßÊýä¿´À´¡£¡£¡£Õâ¸öûÓбØÒªÊǸßÊýר¼Ò°É£¿

Clear[a, x, m, n];
Integrate[Exp[-a x^2], {x, m, n}]
Domorethannecessary.
2Â¥2010-08-27 17:06:15
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religanth

½ð³æ (ÕýʽдÊÖ)

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3Â¥2010-08-27 17:11:37
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snoopyzhao

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

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ÓàÔó³É(½ð±Ò+1):лл²ÎÓëÓ¦Öú£¡ 2010-08-27 23:01:33
religanth(½ð±Ò+2): 2010-08-28 11:16:53
maxima ¸ø³öµÄ½á¹ûÊÇ£º

(%i3) integrate(exp(-a*x^2),x,m,n);

(%o3) sqrt(%pi)*erf(sqrt(a)*n)/(2*sqrt(a))
       -sqrt(%pi)*erf(sqrt(a)*m)/(2*sqrt(a))

µ±È»£¬Õâ¸ö½á¹ûÓ¦¸Ã»¹¿ÉÒÔ»¯¼òһϣ¬ºÇºÇ¡­¡­
4Â¥2010-08-27 20:08:35
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mshwangg

ÖÁ×ðľ³æ (ÕýʽдÊÖ)

¡ï
nono2009(½ð±Ò+1):¹ÄÀøÓ¦Öú¡£ 2010-08-28 06:20:44
religanth(½ð±Ò+2): 2010-08-28 11:17:26

ºÍmathematicaµÄ½á¹ûÂÔÓв»Í¬°¡
5Â¥2010-08-27 23:49:14
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snoopyzhao

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¡ï
ÓàÔó³É(½ð±Ò+1):лл²ÎÓëÓ¦Öú£¡ 2010-08-28 10:18:47
religanth(½ð±Ò+2): 2010-08-28 11:17:38
ÒýÓûØÌû:
Originally posted by mshwangg at 2010-08-27 23:49:14:

ºÍmathematicaµÄ½á¹ûÂÔÓв»Í¬°¡

ÆäʵһÑùµÄ°¡£¬sqrt(log(%e)) = 1 °¡¡­¡­
6Â¥2010-08-28 07:53:58
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mshwangg

ÖÁ×ðľ³æ (ÕýʽдÊÖ)

¡ï
religanth(½ð±Ò+1): 2010-08-28 11:17:07
religanth(½ð±Ò+1): 2010-08-28 11:18:04
ÓàÔó³É(½ð±Ò+1):лл²ÎÓëÓ¦Öú£¡ 2010-08-28 12:15:04
ÒýÓûØÌû:
Originally posted by snoopyzhao at 2010-08-28 07:53:58:


ÆäʵһÑùµÄ°¡£¬sqrt(log(%e)) = 1 °¡¡­¡­


Õâ»Ø¾ÍÒ»ÑùÁË£¬eºÍEÊDz»Í¬µÄ
7Â¥2010-08-28 10:31:03
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religanth

½ð³æ (ÕýʽдÊÖ)

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