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wcjhit

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nefu_qu

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wcjhit(½ð±Ò+10): л뵫ÊÇÎÒÔËÐеÄʱºòÓеãÎÊÌ⣬Èçͼ£¡»¹ÒªÂé·³Äãһϰ¡£¡ 2011-04-29 08:20:53
sunyang1988(½ð±Ò+2): ллָµã 2011-05-05 09:55:18
a=dmin;b=(dmax-dmin)/(n-1);c=(dmax+dmin)./2;
X(1)=a;
F(1)=0;%¼ÙÉèf1=0£»Êµ¼Ên>=2²Å¶Ô
for i=2:n
    X(i)=a+(i-1)*b;
    F(i)=1/c+(sum(1./X)-sum(2./sqrt(c.*X)))/n;
end
plot(2:n,F(2:n))
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2Â¥2011-04-28 19:47:59
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wcjhit

ľ³æ (ÕýʽдÊÖ)

>> a=dmin;b=(dmax-dmin)/(n-1);c=(dmax+dmin)./2;
X(1)=a;
F(1)=0;%¼ÙÉèf1=0£»Êµ¼Ên>=2²Å¶Ô
for i=2:n
    X(i)=a+(i-1)*b;
    F(i)=1/c+(sum(1./X)-sum(2./sqrt(c.*X)))/n;
end
plot(2:n,F(2:n))
??? Undefined function or variable 'dmin'.
3Â¥2011-04-29 08:21:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

libralibra

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wcjhit(½ð±Ò+10): лл£¡ÎÒÏÖÔÚÔÚÍâµØ£¬µÈÎÒ»ØÈ¥ÑéÖ¤ºó£¬½ð±Ò»á×·¼ÓµÄ£¡ 2011-04-30 06:34:12
wcjhit(½ð±Ò+10): Ê×ÏÈ£¬¸ÐлÄãÃǵİïÖú£¡µ«ÊÇÀ¨ºÅÖеĵÚÒ»ÏîºÃÏñûÓпªÆ½·½°¡£¬»¹ÊÇÔõô»ØÊ£¿ÎÒ²»Ì«Ã÷°×£¡Âé·³ÄúÔÚ°ïæ½âÊÍһϣ¡Ð»Ð» 2011-05-03 08:14:23
wcjhit(½ð±Ò+10): 2011-05-04 09:07:23
sunyang1988(½ð±Ò+3): лл»ØÌû½»Á÷ 2011-05-05 09:55:37
×Ô¼ºÐÞ¸ÄdminºÍdmax
CODE:
dmin = 1;
dmax = 10;
f = zeros(1,20);

for n=2:20
    for i=1:n
        f(n) = f(n)+(1/(dmin+(i-1)*(dmax-dmin)/(n-1))-1/sqrt((dmin+dmax)/2))^2;
    end
    f(n) = f(n)/n;
end

figure,plot(2:20,f(2:end),'ro-');

matlab/VB/python/c++/Javaд³ÌÐòÇë·¢QQÓʼþ:790404545@qq.com
4Â¥2011-04-29 15:03:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

libralibra

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

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sunyang1988(½ð±Ò+2): ÐÁ¿àÁË 2011-05-05 09:55:54
ͼƬÔÚÕâÀï

matlab/VB/python/c++/Javaд³ÌÐòÇë·¢QQÓʼþ:790404545@qq.com
5Â¥2011-04-29 15:04:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nefu_qu

ľ³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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wcjhit(½ð±Ò+10): лл£¡ÎÒÊÇÔÚ¼ÆËãÕâ¸ö¹«Ê½Ê±¸Õ½Ó´¥µÄmatlab¡£ÎÒÏÖÔÚÔÚÍâµØ£¬µÈÎÒ»ØÈ¥ÑéÖ¤ºó£¬½ð±Ò»á×·¼ÓµÄ 2011-04-30 06:35:54
sunyang1988(½ð±Ò+2): ллָµã 2011-05-05 09:56:06
ÒýÓûØÌû:
Originally posted by wcjhit at 2011-04-29 08:21:35:
>> a=dmin;b=(dmax-dmin)/(n-1);c=(dmax+dmin)./2;
X(1)=a;
F(1)=0;%¼ÙÉèf1=0£»Êµ¼Ên>=2²Å¶Ô
for i=2:n
    X(i)=a+(i-1)*b;
    F(i)=1/c+(sum(1./X)-sum(2./sqrt(c.*X)))/n;
end
plot(2:n,F(2: ...

Â¥Ö÷Äã²»ÊǸÕѧmatlab°É£¬dminÓëdmaxÄ㶼˵¹ýÊdz£ÊýÁË£¬µ±È»ÄãµÃ¸øËûÒ»¸öÖµ£¬»¹ÓÐn
È磺
clear
n=10;dmin=1;dmax=100;
a=dmin;b=(dmax-dmin)/(n-1);c=(dmax+dmin)./2;
X(1)=a;
F(1)=0;%¼ÙÉèf1=0£»Êµ¼Ên>=2²Å¶Ô
for i=2:n
    X(i)=a+(i-1)*b;
    F(i)=1/c+(sum(1./X)-sum(2./sqrt(c.*X)))/n;
end
plot(2:n,F(2:n),'--s')
ͼƬÎҾͲ»½ØÁË£¬Äã×Ô¼ºÊÔ°É¡£plotÀïµÄ'--s'ÊÇÖ¸¶¨ÏßÐÍÓëµã·ûºÅ£¬s»»³Éo¾ÍÊÇÓÉ·½¿ò±ä³ÉԲȦÁË¡£ÄãÒ²¿ÉÒÔÊÔÊÔÂ¥ÉÏÄÇλµÄ¡£Ä㻹¿ÉÒÔÊÖËãÁ½¸ö¶Ô±Èһϡ£
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6Â¥2011-04-29 15:27:56
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

libralibra

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

æôÆï½«¾ü

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
sunyang1988(½ð±Ò+1): 2011-05-05 09:56:16
µÄÈ·ÓÐÎó,ÎÒÊèºö,©ÁËÒ»¸ösqrt,ÏÂÃæ¸ÄÁË
CODE:
f(n) = f(n)+(1/sqrt(dmin+(i-1)*(dmax-dmin)/(n-1))-1/sqrt((dmin+dmax)/2))^2;

matlab/VB/python/c++/Javaд³ÌÐòÇë·¢QQÓʼþ:790404545@qq.com
7Â¥2011-05-04 14:19:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wcjhit

ľ³æ (ÕýʽдÊÖ)

·Ç³£¸Ðл£¡ÐÁ¿àÁË£¡
8Â¥2011-05-04 19:18:09
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

tang_zm

гæ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by libralibra at 2011-04-29 15:03:10
×Ô¼ºÐÞ¸ÄdminºÍdmax
dmin = 1;
dmax = 10;
f = zeros(1,20);

for n=2:20
    for i=1:n
        f(n) = f(n)+(1/(dmin+(i-1)*(dmax-dmin)/(n-1))-1/sqrt((dmin+dmax)/2))^2;
    end
    f(n) = f(n)/n; ...

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9Â¥2014-10-12 11:43:17
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