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gzy_103

½ð³æ (ÕýʽдÊÖ)

[ÇóÖú] Çó½â·½³Ì×é ÒÑÓÐ2È˲ÎÓë

function y=broyden(x0)
a=eye(length(x0));
x1=x0-myfun2(x0)/a;
n=1;
while(norm(x1-x0)>=1.0e-6)&(n<=100000000)
    x0=x1;
    x1=x0-myfun2(x0)/a;
    p=x1-x0;
    q=myfun2(x1)-myfun(x0);
    a=a+(q-p*a)'*p/norm(p);
    n=n+1;
end
y=x1;
n
function y= myfun2(x)
a=2.6;
y=['x(1)*0.4-0.21+x(2)*0.6','x(2)-x(1)^(1/(1-a))*(2/3)*((1-x(1))^(a/(a-1))*(0.21/0.79)^(a/(a-1))-x(1)^(1/(1-a)))'];

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gzy_103

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by ÏÉľӳÔ at 2014-05-30 21:19:01
myfun2(x)ÓÐµãÆæ¹Ö°¡£¬¶¼·ÅÔÚÒýºÅÀïÄÜÔËËãô£¿

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3Â¥2014-05-30 21:29:34
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½ð³æ (ÕýʽдÊÖ)

myfun2(x)ÓÐµãÆæ¹Ö°¡£¬¶¼·ÅÔÚÒýºÅÀïÄÜÔËËãô£¿
Hardtosay.
2Â¥2014-05-30 21:19:01
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charmantang

½û³æ (ÕýʽдÊÖ)

¡ï
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jjdg: ½ð±Ò+1, ¸Ðл²ÎÓë 2014-06-04 00:47:27
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4Â¥2014-06-01 18:18:15
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change0618

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

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¡ï
jjdg: ½ð±Ò+1, ¸Ðл²ÎÓë 2014-06-04 00:47:13
´ÓÕâ¸öfunction y= myfun2(x)º¯Êý¿ÉÒÔ¿´³öx(1)²»ÄÜ´óÓÚ1Ò²²»ÄÜСÓÚ0£¬´óÓÚ1Ôò((1-x(1))^(a/(a-1))Ϊ¸ºÊý£¬Ð¡ÓÚ0Ôòx(1)^(1/(1-a))Ϊ¸ºÊý£¬µ«ÔÚwhileÑ­»·ÖÐx1=x0-myfun2(x0)/aÄÑÃâ³öÏÖÕâÖÖÇé¿ö£¬ËùÒÔÔÚq=myfun2(x1)-myfun(x0)ʱ³öÏÖ´íÎó¡£

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5Â¥2014-06-02 14:30:13
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