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feibao

Òø³æ (СÓÐÃûÆø)

[½»Á÷] ¡¾ÇóÖú¡¿MATLAB³ÌÐò³ö´íÇóÖú ÒÑÓÐ5È˲ÎÓë

Çë¸ßÊÖÖ¸½Ì ¶àл  ÏÂÃæÕâ¸ö³ÌÐòÔÚMATLAB7.0°æ±¾ÖÐÔËÐÐʱ×ÜÊdzöÏÖÈçÏÂÎÊÌ⣺

??? Error using ==> minus
Out of memory. Type HELP MEMORY for your options.

Error in ==> sym.sym>char2sym at 395
         p = cumsum((S == '(') - (S == ')'));

Error in ==> sym.sym at 92
   S = char2sym(x);

Error in ==> sym.maple at 92
   result = sym(result);

Error in ==> sym.diff at 50
   R = reshape(maple('map','diff',S(,x),size(S));

µ«ÔÚMATLAB7.10°æ±¾ÖÐûÓÐÏÔʾ³ö´í£¬È´Ò»Ö±²»³ö½á¹û  ²»ÖªÔõô»ØÊ Çë°ïæÁË


clear all
>> clear all
format short
syms u  v
m=1;
s=1+0.1;
a=0.98;
b=0.99;
n1=1.48;
n2=-a*n1;
n3=b*n1;
r=(n1^2-n2^2)/(n1^2-n3^2)
w1=v^2*r-u^2;
w=v^2-u^2;
ne=sqrt((w^2/v^2)*(n1^2-n3^2)+n3^2);
F1=-besselj(m+1,u)+m./u.*besselj(m,u);
F=F1./(u.*besselj(m,u));
M1=besseli(m+1,w1)+m./w1.*besseli(m,w1);
M=M1./(w1.*besseli(m,w1));
N1=-besselk(m+1,w1)+m./w1.*besselk(m,w1);

N=N1./(w1.*besselk(m,w1));
Q=m*(1./u.^2+1./w1.^2);
R=m*(1./w1.^2-1./w.^2)/s;
S1=besseli(m+1,w1*s)+m./w1./s.*besseli(m,w1*s);

S=S1./(w1.*besseli(m,w1*s));
T1=-besselk(m+1,w*s)+m./w./s.*besselk(m,w*s);

T=T1./(w.*besselk(m,w*s));
X1=-besselk(m+1,w1*s)+m./w1./s.*besselk(m,w1*s);

X=X1./(w1.*besselk(m,w1*s));
I1m=besseli(m,w1);
K1m=besselk(m,w1);
I2m=besseli(m,w1*s);
K2m=besselk(m,w1*s);
x1=Q.*ne.*I1m
x2=Q.*ne.*K1m;
x3=I1m.*(F-M);
x4=K1m.*(F-N);
x5=R*ne.*I2m;
x6=R.*ne.*K2m;
x7=I2m.*(-S-T);
x8=K2m.*(-X-T);
x9=I1m.*(n1^2.*F-n2^2.*M);
x10=K1m.*(n1^2.*F-n2^2.*N);
x11=Q.*ne.*I1m;
x12=Q.*ne.*K1m;
x13=I2m.*(-S.*n2^2-n3^2.*T);
x14=K2m.*(-n2^2.*X-n3^2.*T);
x15=R.*ne.*I2m;
x16=R.*ne.*K2m;
f=det([x1,x2,x3,x4;x5,x6,x7,x8;x9,x10,x11,x12;x13,x14,x15,x16]);
fv=diff(f,v);
fu=diff(f,u);
f1=-fv/fu;
f2=1+(u/v)^2*(1-2*v/u*f1);
Q=load('e:\0.1.txt');
for i=1:length(Q(:,1));
v=Q(i,1);
u=Q(i,3)
f22=eval(f2)              
f11=eval(f1)
hold on
plot(v,f11,f22)
end
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lingwei004

½ð³æ (СÓÐÃûÆø)

feibao(½ð±Ò+1): 2010-04-18 12:12
Êý¾ÝÌ«´óÁ˰ɡ£Äã0.1.txtÀïÃæÓжàÉÙ¸öÊý¾Ý£¿¹À¼ÆÊÇÕâ¸öµØ·½ÎÊÌâ
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feibao

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
Originally posted by lingwei004 at 2010-04-15 16:59:47:
Êý¾ÝÌ«´óÁ˰ɡ£Äã0.1.txtÀïÃæÓжàÉÙ¸öÊý¾Ý£¿¹À¼ÆÊÇÕâ¸öµØ·½ÎÊÌâ

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3Â¥2010-04-15 17:20:51
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anyuezhiji

Òø³æ (ÕýʽдÊÖ)

ÐÇ¿ÕÐÐÕß

feibao(½ð±Ò+5): 2010-04-18 12:13
Out of memory. Type HELP MEMORY for your options

ÄÚ´æ²»×ã
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Matlab ÖÐÊý×鱨ÐëÕ¼ÓÃÁ¬Ðø·ÖÅäµÄÄÚ´æ¶Î£¬µ±ÎÞ·¨ÎªÐ½¨µÄÊý×é·ÖÅäÁ¬ÐøµÄÄÚ´æ¶ÎµÄʱºò£¬¡±Out of Memory¡± ¾Í»á³öÏÖ¡£ÓÉÓÚ·´¸´·ÖÅäºÍÊÍ·ÅÊý×é»áʹ¿ÉÓõÄÁ¬ÐøÄÚ´æ¶Î¼õÉÙ£¬Òò´Ëµ± Matlab ¸Õ¸ÕÆô¶¯Ê±ÆäÁ¬ÐøÄÚ´æ×î¶à£¬´ËʱÍùÍù¿ÉÒÔн¨·Ç³£´óµÄÊý×飬ÕâÒ»µã¿ÉÒÔÓÃÃüÁî feature(¡¯memstats¡¯)£¨ÔÚ 7.0 °æ±¾ÒÔÉÏ£©¿´³ö¡£Èç¹ûÏÖʵµÄ×î´óÁ¬ÐøÄÚ´æ¶ÎºÜС£¬µ«Êµ¼Ê¿ÉÓÃÄڴ棨·ÇÁ¬ÐøµÄ£©ÈԾɺܶ࣬Ôò±íÃ÷ÄÚ´æÖÐËéÆ¬Ì«¶àÁË¡£´Ëʱ¿ÉÒÔ¿¼ÂÇÓà pack ÃüÁpack ÃüÁîµÄ×÷ÓþÍÊǽ«ËùÓÐÄÚ´æÖеÄÊý×éдÈëÓ²ÅÌ£¬È»ºóÖØÐ½¨Á¢ÕâЩÊý×飬ÒÔ¼õÉÙÄÚ´æË鯬¡£´ËÍ⣬ÔÚÃüÁîÐлòÕß³ÌÐòÖж¼¿ÉÒÔʹÓà clear ÃüÁî£¬ËæÊ±¼õÉÙ²»±ØÒªµÄÄÚ´æ¡£

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ÒýÓûØÌû:
out of MemoryÎÊÌâ´¦Àí·½·¨Ò»°ãÈçÏ£º

1. Ôö¼ÓÐéÄâÄÚ´æ
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3. Ìõ¼þÔÊÐíµÄ»°²ÉÓÃ64λϵͳ
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7. ¹Ø±ÕMatlab Server

[ Last edited by anyuezhiji on 2010-4-15 at 20:08 ]
°µÔÂÏÂûÓÐÁôÏ·çµÄºÛ¼££¬µ«ËüÒѾ­¼ÅȻƮÊÅ¡£¡£By<°µÔÂÖ®¼Å>:tiger38:
4Â¥2010-04-15 19:14:57
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

anyuezhiji

Òø³æ (ÕýʽдÊÖ)

ÐÇ¿ÕÐÐÕß

feibao(½ð±Ò+2): 2010-04-18 12:13
²âÊÔÁËÏÂ

ÉÏÃæµÄ´úÂëÔÚÓÃdiffËã΢·Öǰ
fµÄ±í´ïʽµÄ³¤¶ÈΪ927553×Ö½Ú

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fµÄ±í´ïʽ³¤¶È¾ÍÓÐ92Íò¶à×Ö·û

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feibao

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fspdlh

½ð³æ (ÕýʽдÊÖ)

feibao(½ð±Ò+1): 2010-04-18 12:14
»¹Óиö°ì·¨£¬¾ÍÊǰÑÓò»×ŵıäÁ¿¼°Ê±´ÓÄÚ´æÔÚÖÐɾ³ý
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feibao

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
Originally posted by fspdlh at 2010-04-16 11:30:03:
»¹Óиö°ì·¨£¬¾ÍÊǰÑÓò»×ŵıäÁ¿¼°Ê±´ÓÄÚ´æÔÚÖÐɾ³ý
clear ±äÁ¿Ãû

ллÄã°¡  ÏÖÔÚµÄ×î´óÎÊÌâÊǸø³ÌÐò¸³Öµºó Ò»Ö±²»³ö½á¹û£¿£¿£¿£¿£¿£¿£¿£¿£¿£¬Õâ¸öÒ²ÊÇÄÚ´æ²»×ãµÄÎÊÌ⣿£¿ÏȰ´Â¥ÉϵÄu  v Öµ   °ï°³¿¼ÂÇÒ»ÏÂÔõÑù²Å³ö½á¹û£¬Ð»Ð»
8Â¥2010-04-16 11:40:41
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anyuezhiji

Òø³æ (ÕýʽдÊÖ)

ÐÇ¿ÕÐÐÕß

feibao(½ð±Ò+5): 2010-04-18 12:15
feibao(½ð±Ò+5):·Ç³£Ð»Ð»Ð»Ð» 2010-04-21 13:58
ÒýÓûØÌû:
Originally posted by feibao at 2010-04-16 11:40:41:



ллÄã°¡  ÏÖÔÚµÄ×î´óÎÊÌâÊǸø³ÌÐò¸³Öµºó Ò»Ö±²»³ö½á¹û£¿£¿£¿£¿£¿£¿£¿£¿£¿£¬Õâ¸öÒ²ÊÇÄÚ´æ²»×ãµÄÎÊÌ⣿£¿ÏȰ´Â¥ÉϵÄu  v Öµ   °ï°³¿¼ÂÇÒ»ÏÂÔõÑù²Å³ö½á¹û£¬Ð»Ð»

²»ÊÇ×ÜÄÚ´æ²»×ã
¶øÊÇfÌ«´óÁË Äã¿ÉÒÔ°ÑfµÄ±í´ïʽ±£´æ³ÉÎı¾Îļþ²âÊÔÏÂ

Çóµ¼Ê±µ¥¸ö±äÁ¿ËùÕ¼ÄÚ´æÌ«´ó ½¨Òé²ð¿ªÀ´Ë㣺
ÒýÓûØÌû:
clear all
format short
syms u  v

m=1;
s=1+0.1;
a=0.98;
b=0.99;
n1=1.48;
n2=-a*n1;
n3=b*n1;
r=(n1^2-n2^2)/(n1^2-n3^2);

w1=v^2*r-u^2;
w=v^2-u^2;
ne=sqrt((w^2/v^2)*(n1^2-n3^2)+n3^2);
F1=-besselj(m+1,u)+m./u.*besselj(m,u);
F=F1./(u.*besselj(m,u));
M1=besseli(m+1,w1)+m./w1.*besseli(m,w1);
M=M1./(w1.*besseli(m,w1));
N1=-besselk(m+1,w1)+m./w1.*besselk(m,w1);

N=N1./(w1.*besselk(m,w1));
Q=m*(1./u.^2+1./w1.^2);
R=m*(1./w1.^2-1./w.^2)/s;
S1=besseli(m+1,w1*s)+m./w1./s.*besseli(m,w1*s);

S=S1./(w1.*besseli(m,w1*s));
T1=-besselk(m+1,w*s)+m./w./s.*besselk(m,w*s);
T=T1./(w.*besselk(m,w*s));
X1=-besselk(m+1,w1*s)+m./w1./s.*besselk(m,w1*s);

X=X1./(w1.*besselk(m,w1*s));
I1m=besseli(m,w1);
K1m=besselk(m,w1);
I2m=besseli(m,w1*s);
K2m=besselk(m,w1*s);
x1=Q.*ne.*I1m;
x2=Q.*ne.*K1m;
x3=I1m.*(F-M);
x4=K1m.*(F-N);
x5=R*ne.*I2m;
x6=R.*ne.*K2m;
x7=I2m.*(-S-T);
x8=K2m.*(-X-T);
x9=I1m.*(n1^2.*F-n2^2.*M);
x10=K1m.*(n1^2.*F-n2^2.*N);
x11=Q.*ne.*I1m;
x12=Q.*ne.*K1m;
x13=I2m.*(-S.*n2^2-n3^2.*T);
x14=K2m.*(-n2^2.*X-n3^2.*T);
x15=R.*ne.*I2m;
x16=R.*ne.*K2m;
% f=det([x1,x2,x3,x4;
%        x5,x6,x7,x8;
%        x9,x10,x11,x12;
%        x13,x14,x15,x16]);


%%PSL@CSU
%%QQ:547423688
%%Email:anyuezhiji@qq.com
%%Edit @ 2010.4.17


%²ð¿ªËã  
detf1=x1*x6*x11*x16;
detf2=-x1*x6*x12*x15;
detf3=-x1*x10*x7*x16;
detf4=x1*x10*x8*x15;
detf5=x1*x14*x7*x12;
detf6=-x1*x14*x8*x11;
detf7=-x5*x2*x11*x16;
detf8=x5*x2*x12*x15;
detf9=x5*x10*x3*x16;
detf10=-x5*x10*x4*x15;
detf11=-x5*x14*x3*x12;
detf12=x5*x14*x4*x11;
detf13=x9*x2*x7*x16;
detf14=-x9*x2*x8*x15;
detf15=-x9*x6*x3*x16;
detf16=x9*x6*x4*x15;
detf17=x9*x14*x3*x8;
detf18=-x9*x14*x4*x7;
detf19=-x13*x2*x7*x12;
detf20=x13*x2*x8*x11;
detf21=x13*x6*x3*x12;
detf22=-x13*x6*x4*x11;
detf23=-x13*x10*x3*x8;
detf24=x13*x10*x4*x7;


for i=1:24
eval(['fv',num2str(i),'=diff(detf',num2str(i),',v);']);
end
for i=1:24
eval(['fu',num2str(i),'=diff(detf',num2str(i),',u);']);
end

%ÕâÀ↑ʼ¶ÁÈëÊý¾Ý
v=7.9842590e-001;
u=7.7820931e-001;
%ÏÂÃæ¿ªÊ¼ÇóÖµ
ffv=0;
for i=1:24
    eval(['ffv=ffv+eval(fv',num2str(i),');'])
end

ffu=0;
for i=1:24
    eval(['ffu=ffu+eval(fu',num2str(i),');'])
end

ff1=-ffv/ffu
ff2=1+(u/v)^2*(1-2*v/u*ff1)

ÒýÓûØÌû:
ff1 =

    1.0661


ff2 =

   -0.1282

µ«ÊÇÄãÓÃÁËbesseliµÈº¯Êý ²»ÖªµÀÕâÑù²ð¿ª°Ñ¸÷ÏîÇóµ¼ÔÙÏà¼ÓÊDz»ÊÇÓÐÎó
Èç¹ûÓÐÎóµÄ»° ²Î¿¼Õâһ˼· °ÑËü²ð³ÉÕýÈ·µÄÏîÏà¼Ó



×£¾ýºÃÔË£¡£¡

[ Last edited by anyuezhiji on 2010-4-17 at 00:33 ]
°µÔÂÏÂûÓÐÁôÏ·çµÄºÛ¼££¬µ«ËüÒѾ­¼ÅȻƮÊÅ¡£¡£By<°µÔÂÖ®¼Å>:tiger38:
9Â¥2010-04-17 00:27:52
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

anyuezhiji

Òø³æ (ÕýʽдÊÖ)

ÐÇ¿ÕÐÐÕß

feibao(½ð±Ò+1): 2010-04-18 12:15
ÓÃÏÂÃæµÄ´úÂë²âÊÔÁËÏÂ
ÒýÓûØÌû:
f=det([x1,x2;
        x3,x4;]);
fu=diff(f,u)
fu2=diff(x1*x4,u)+diff(-x2*x3,u)
v=7.9842590e-001;
u=7.7820931e-001;
eval(fu)
eval(fu2)

·Ö¿ªËãÔÙÏà¼ÓÖ±½ÓÇ󵼵óöµÄ½á¹ûÊÇÒ»ÑùµÄ
°µÔÂÏÂûÓÐÁôÏ·çµÄºÛ¼££¬µ«ËüÒѾ­¼ÅȻƮÊÅ¡£¡£By<°µÔÂÖ®¼Å>:tiger38:
10Â¥2010-04-17 13:32:24
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[¿¼ÑÐ] 296²ÄÁÏר˶Çóµ÷¼Á +17 202451007219 2026-04-02 18/900 2026-04-02 23:14 by Âí¶ù¿ì¿ìµØÅÜ
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[¿¼ÑÐ] 0856²ÄÁÏÓ뻯¹¤µ÷¼Á£¬339 +14 10213207 2026-03-31 14/700 2026-04-02 21:01 by 1104338198
[¿¼ÑÐ] 285Çóµ÷¼Á +14 AZMK 2026-04-02 14/700 2026-04-02 15:54 by ÉϾÅÌìÀ¿Ô£¨ºÃÔ
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼´óѧ²ÄÁÏѧ˶328·ÖÇóµ÷¼Á +6 1¶Îʱ¼ä 2026-03-31 7/350 2026-04-02 13:57 by 3041
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