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376981713

½ð³æ (СÓÐÃûÆø)

[ÇóÖú] Çó½â¶þÔª¶þ´Î·½³Ì×é

x-y=A(1-x)^2
y^2=2B(x-y)(1-y)»ùÖÐA,BÊÇÒÑÖªµÄ£¬ÇÒA,BÏà¶ÔÓ¦ÓÐ100×éÊý£¬ËùÒÔÎÒÏëÔÚexcelÖмÆË㣬ËãÒ»×é¾Í×Ô¶¯µÃ³öÆäËû£¡£¡Çó¸ßÈËÖ¸µã£¡Èç¹û²»ÄÜÓÃexcelÓ¦¸ÃÔõô´¦Àí£¡
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feixiaolin

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÓÅÐã°æÖ÷

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376981713: ½ð±Ò+20, ¡ïÓаïÖú 2013-10-05 13:49:06
ÒýÓûØÌû:
9Â¥: Originally posted by 376981713 at 2013-10-04 09:38:48
ÄúºÃ£¡£¡ÔÛÄܲ»ÄÜÀ´µãÍêÕûµÄ£¡È«Ò»µã£®ÈÃÎÒ¿ÉÒÔ¿´¶®µÄ£¡...

fid = fopen('·¾¶¼°ÎļþÃû','r');      
[AB,COUNT] = fscanf(fid,'%5f',[2,50]);   %% eg. 2ÁÐ50ÐÐ

²ÎÊýA
A=AB(1,;

²ÎÊýB
xB=AB(2,;

for k=1:50
  
    %% 1+2*(x-1)+(-2*A+1)*(x-1)^2+(-2*A+2*B*A)*(x-1)^3+(A^2-2*B*A^2)*(x-1)^4=0
    C4=A^2-2*B*A^2;
    C3=-2*A+2*B*A;
    C2=-2*A+1;
    C1=2;
    C0=1;

    C=[C4,C3,C2,C1,C0];
    Root=(roots(C));
   
    %% ´òÓ¡»òÏÔʾ£º
   x=1+Root(4);
    x=1+Root(3);
    x=1+Root(2);
    x=1+Root(1);
   
end;
10Â¥2013-10-04 15:58:31
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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376981713: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú 2013-10-02 17:27:56
sweety: ÊýѧEPI+1, ¹ÄÀøÓмÛÖµµÄ»ØÌû 2013-10-11 09:56:01
ÓɵÚһʽµÃ:y=x-A*(1-x)^2
´úÈëµÚ¶þʽµÃ:1+2*(x-1)+(-2*A+1)*(x-1)^2+(-2*A+2*B*A)*(x-1)^3+(A^2-2*B*A^2)*(x-1)^4=0
ÉÏʽÊǹØÓÚ(x-1)µÄËĴη½³Ì!¿ÉÓÉËĴη½³ÌÇó¸ù¹«Ê½Çó½â!
ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
2Â¥2013-10-02 16:58:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

376981713

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by wurongjun at 2013-10-02 16:58:55
ÓɵÚһʽµÃ:y=x-A*(1-x)^2
´úÈëµÚ¶þʽµÃ:1+2*(x-1)+(-2*A+1)*(x-1)^2+(-2*A+2*B*A)*(x-1)^3+(A^2-2*B*A^2)*(x-1)^4=0
ÉÏʽÊǹØÓÚ(x-1)µÄËĴη½³Ì!¿ÉÓÉËĴη½³ÌÇó¸ù¹«Ê½Çó½â!

¸Ðл£¡µ«¶ÔÓÚÎÒÕâÑùÒ»¸ö²»ÊÇÊýѧϵµÄÈËÀ´Ëµ£¬»¹ÊÇÓеãÄѰ¡£¡Ò²²»ÖªµÀËĴη½³ÌÇó¸ù¹«Ê½ÊÇʲô£¿»¹ÍûµÃµ½ÄãµÄ°ïÖú£¡¸Ðл¸Ðл£¡
3Â¥2013-10-02 17:27:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

wurongjun

ר¼Ò¹ËÎÊ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

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376981713: ½ð±Ò+10, ¡ïÓаïÖú 2013-10-03 09:16:34
ËĴη½³ÌÇó¸ù¹«Ê½!
Çó½â¶þÔª¶þ´Î·½³Ì×é
ËĴη½³ÌµÄ¸ù.JPG

ÉÆ¶ñµ½Í·ÖÕÓб¨,È˼äÕýµÀÊDz×É£.
4Â¥2013-10-02 22:32:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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