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zhuzhuowei2004

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bote

use numeric integration

¡ï ¡ï
zhuzhuowei2004(½ð±Ò+1):лл²ÎÓë
²¨²»¶¯(½ð±Ò+1,VIP+0):¸ÐлӦÖú£¡ 12-10 12:38
ÒýÓûØÌû:
Originally posted by zhuzhuowei2004 at 2009-12-1 15:29:
ÎÒÔÚ¼ÆËãµÄ¹ý³ÌÖÐÓöµ½ÁËÒ»¸ö¹ØÓÚ³¬ºÏÁ÷¼¸ºÎÌØÊ⺯ÊýµÄ»ý·Ö£¬´ó¼Ò°ïæ¿´¿´ÊÇʲôԭÒòµ¼Ö»ý·Ö»ý²»³öÀ´£¿Ð»Ð»£¡

no way to get an analytic solution. but you can try "NIntegrate[f(z), {z, 0, 1000}]", a numeric solution.

for your question: it is:

NIntegrate[
Hypergeometric1F1[1, 1/6, 0.0074 + 4.06*10^-10*z^2], {z, 0, 1000}]

=1045.50511
3Â¥2009-12-10 11:50:29
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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lcqliu

Òø³æ (ÕýʽдÊÖ)

¡ï ¡ï
zhuzhuowei2004(½ð±Ò+1):лл²ÎÓë
senlia(½ð±Ò+1,VIP+0):¸ÐлӦÖú£¡£¡ 12-10 18:05
ÄãÏÈÈ˹¤°Ñ»¯¼òΪ٤Âíº¯Êý,ÔÙ·Ö¿ªåÌ,»¹ÓÐÄã×îºóÒ»¸öϵÊý4.06*10^-10*z^2Èí¼þÒ²ÊÇÎÞ·¨»¯¼òµÄ,

Õâ¸öµØ·½ÊÇËã²»³öÀ´µÄÔ­Òò,
4Â¥2009-12-10 14:53:11
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