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chuckxian

гæ (³õÈëÎÄ̳)

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±¾È˲ËÄñ£¬ÕýÔÚѧϰmatlab±à³Ì£¬³õÊÔ±àÁ˸ö³ÌÐò£¬Ê¼ÖÕÓëÓëÊéÖÐËùдµÄ´ð°¸£¬ÔÚ³õÖµÌõ¼þ±àдÉÏ´æÔÚ²îÒ죬ÎÒʼÖÕ¾õµÃÊÇÊéÉÏд´íÁË£¬µ«ÎÒµÄͼÏñºÃÏñÓÖ²»¶Ô£¬Âé·³´ó¼Ò¿´¿´

ÆäÖÐu1=sint ,u2=cost, l=1,a^2=0.001,¦Õ(x)=x,xµÄºÍt·¶Î§¶¼ÊÇ[0,1],¶¼·ÖΪ100·Ý
¦¤x=¦¤t=0.01£»ÌâÄ¿ºÍ×îºóÇó½âµÄ²î·Ö¸ñʽ¶¼ÔÚͼƬÖÐ

Îҵıà³ÌÈçÏÂ
u=zeros(100,100);
for i=1:100
u(1,i)=sin(i/100);   u(100,i)=cos(i/100);   u(i,1)=i/100;ÎÒдµÄ³õÖµÌõ¼þ
ÊéÉÏдµÄ³õÖµÌõ¼þΪu(i,1)=sin(i/100);   u(1100i)=cos(i/100);   u(1,i)=i/100;
ÏÂÃæ¶¼³ÌÐò¶¼Ò»Ñù¡¤¡¤¡¤¡¤¡¤
end
a=0.001;
delax=0.01; delat=0.01;
r=a*a*delat/delax/delax;
for j=1:100
u(2:99,j+1)=(1-2*r)*u(2:99,j)+r*(u(1:98,j)+u(3:100,j));
pause(0.01);
end
surf(u)

IMG_20rrrr130420_164207.png

IMG_20rrrr130420_164207.png



IMG_201ee30420_170824.png



[ Last edited by chuckxian on 2013-4-20 at 17:11 ]
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