±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 811  |  »Ø¸´: 3
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

shadow004

½û³æ (СÓÐÃûÆø)

±¾ÌûÄÚÈݱ»ÆÁ±Î

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

ÔÂÖ»À¶

Ö÷¹ÜÇø³¤ (Ö°Òµ×÷¼Ò)

ÒýÓûØÌû:
3Â¥: Originally posted by shadow004 at 2014-07-29 22:36:55
µÚÒ»¸ö¹«Ê½µÄÊäÈëºÃÏñÓеãÎÊÌ⣬ÎÒ°ÑԭʽºÍ´ð°¸¸½ÉÏ£¬Âé·³Äú°ïÎÒ¿´Ò»ÏÂ

²¶»ñ.PNG
...

ÄúºÃ£¡
ÎÒ³õ²½×öÁËһϣº

Ïȵ÷ÓÃÐÁÆÕÉ­»ý·Öº¯Êý£º
quadgk(@(x) sin(x).*exp(-1.677*0.5*0.0305*180*180/pi/pi*(x-77*pi*(1/180)).^2),0,pi)

ans =

    0.1879

Ëæºó£¬ÎÒ×öÁ˽á¹û¼ìÑ飬µ÷ÓÃÌÝÐλý·Ö¹«Ê½£º

>> x=linspace(0,pi,100);
>> y=sin(x).*exp(-1.677*0.5*0.0305*180*180/pi/pi*(x-77*pi*(1/180)).^2);
>>  trapz(x,y)

ans =

    0.1879

·¢ÏÖ»ý·Ö½á¹ûÊÇÒ»ÑùµÄ£¬µ«½á¹û0.1879ÓëÄú¸ø³öµÄ0.133057²»Ò»Ö¡£
ÓÚÊÇ£¬ÎÒ»³ÒÉÎÒ¹«Ê½²»ÊÇÊäÈëÓÐÎó£¬ÓÚÊǶÔ×Ô¼ºÊäÈëµÄ¹«Ê½×÷Á˼ìÑ飬Èç¹û¸½Í¼1¡£
Óɸ½Í¼¿É¼û£¬¹«Ê½ÊäÈëËÆºõûÎÊÌâ¡£
¿É·ñ£¬ÇëÄúÒ²¼ì²éÒ»ÏÂÄúµÄ¹«Ê½ÊÇ·ñÊäÈëÕýÈ·£¿
metlab Çó½âÖ¸Êý»ý·Ö
¸½Í¼1.png

MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
4Â¥2014-07-30 09:08:25
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 4 ¸ö»Ø´ð

ÔÂÖ»À¶

Ö÷¹ÜÇø³¤ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
shadow004: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2014-07-28 23:29:14
MATLAB:
quadgk(@(x) sin(x).*exp(-0.2498e-1*(x-77*pi*(1/180)).^2),0,pi)

ans =1.9745


quadgk(@(x) exp(-0.2498e-1*(x-37*pi*(1/180)).^2),0,2*pi)

ans =5.0864

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

MATLAB¡¢MSСÎÊÌâ¡¢ÆÕͨÎÊÌâÇë·¢ÌûÇóÖú£¡Ê±¼ä¾«Á¦ÓÐÏÞ£¬Ë¡²»½ÓÊÜÎÞ³¥Ë½ÐÅÇóÖú¡£
2Â¥2014-07-28 20:24:50
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

shadow004

½û³æ (СÓÐÃûÆø)

Ëͺ컨һ¶ä
±¾ÌûÄÚÈݱ»ÆÁ±Î

3Â¥2014-07-29 22:36:55
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á +6 ÕÅzz111 2026-03-27 7/350 2026-03-27 17:23 by ×óµÄ°¶
[¿¼ÑÐ] 352·Ö »¯¹¤Óë²ÄÁÏ +3 º£Äɰٴ¨Ly 2026-03-27 3/150 2026-03-27 17:18 by ÑîÑîÑî×Ï
[¿¼ÑÐ] 328Çóµ÷¼Á +6 àŵεĻù±¾¶¼ 2026-03-27 6/300 2026-03-27 16:49 by sanrepian
[¿¼ÑÐ] 287Çóµ÷¼Á +10 land xuxu 2026-03-26 10/500 2026-03-27 15:33 by ÅÁ¶ûÂíÀ­ÌØ
[¿¼ÑÐ] Äϲý´óѧ²ÄÁÏר˶311·ÖÇóµ÷¼Á +10 77chaselx 2026-03-20 10/500 2026-03-27 11:28 by wangjy2002
[¿¼ÑÐ] ¿¼ÑÐ292Çóµ÷¼Á +3 YIXIAO789 2026-03-26 3/150 2026-03-27 10:51 by guoweigw
[¿¼ÑÐ] 304Çóµ÷¼Á +3 ÂüÊâ2266 2026-03-27 3/150 2026-03-27 10:17 by guoweigw
[¿¼ÑÐ] ²ÄÁÏѧ˶£¬Çóµ÷¼Á 6+5 ÌǺù«888ll 2026-03-22 10/500 2026-03-27 08:18 by hypershenger
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +8 Æ¥¿Ëi 2026-03-23 8/400 2026-03-27 08:11 by hypershenger
[¿¼ÑÐ] 342Çóµ÷¼Á +3 ¼ÓÓÍaÀîzs 2026-03-26 3/150 2026-03-27 00:29 by wxiongid
[¿¼ÑÐ] Ò»Ö¾Ô¸Ö£ÖÝ´óѧ£¬080500ѧ˶£¬×Ü·Ö317·ÖÇóµ÷¼Á +4 ¾Ù¸öÀõ×Óoi 2026-03-24 5/250 2026-03-26 23:15 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] Çóµ÷¼Á +5 «lty 2026-03-25 6/300 2026-03-26 20:49 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] ×ÊÔ´Óë»·¾³ µ÷¼ÁÉêÇë(333·Ö) +9 holy J 2026-03-21 9/450 2026-03-26 15:47 by 161765490
[¿¼ÑÐ] 291 Çóµ÷¼Á +7 »¯¹¤2026½ì±ÏÒµÉ 2026-03-21 8/400 2026-03-26 11:25 by AlenQIN.
[¿¼ÑÐ] 309Çóµ÷¼Á +4 gajsj 2026-03-25 5/250 2026-03-26 00:27 by Dyhoer
[¿¼ÑÐ] 299Çóµ÷¼Á +4 15188958825 2026-03-25 4/200 2026-03-25 22:56 by 418490947
[¿¼ÑÐ] µ÷¼Á +4 13853210211 2026-03-24 4/200 2026-03-24 19:44 by ms629
[¿¼ÑÐ] 277·ÖÇóµ÷¼Á£¬¿çµ÷²ÄÁÏ +3 ¿¼Ñе÷¼Álxh 2026-03-24 3/150 2026-03-24 13:52 by JourneyLucky
[¿¼ÑÐ] 293Çóµ÷¼Á +3 ÌÎÌÎWjt 2026-03-22 5/250 2026-03-22 22:21 by jiangpengfei
[¿¼ÑÐ] ʯºÓ×Ó´óѧ£¨211¡¢Ë«Ò»Á÷£©Ë¶²©Ñо¿Éú³¤ÆÚÕÐÉú¹«¸æ +3 Àî×ÓÄ¿ 2026-03-22 3/150 2026-03-22 21:01 by ÔõôÊÍ»³
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û