%??2014/10/21??17:11
%??This?is?a?self_programmed?process?implementing?the?LU?decomposition
%??method?which?is?one?of?the?most?classic?metheds.
function?[lux]=lu_le（ab）
y=zeros（size（b））;
u=zeros（size（a））;
l=eye（size（a））;
dim_n=size（a1）;
dim_m=size（a2）;
%?flag=0;
if?det（a）==0
????disp（‘The?determinant?of?the?coefficient‘‘s?matrix?is?zero?!‘）;
elseif?dim_n~=dim_m
????disp（‘The?coefficient‘‘s?matrix?has?unequal?rows?and?columns‘）
else
????u（11）=a（11）;
????for?i=2:dim_n
????????u（1i）=a（1i）;
????????l（i1）=a（i1）/u（11）;
????end
????for?r=2:dim_n
????????sumt_rr=0;
????????for?k=1:r-1
????????????sumt_rr=sumt_rr+l（rk）*u（kr）;
????????end
????????u（rr）=a（rr）-sumt_rr;
????????for?j=r+1:dim_n
????????????sumt1=0;
????????????sumt2=0;
????????????for?k=1:r-1

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1366??2014-10-21?17:12??LU分解\LU\lu_le.m

?????文件????????189??2014-10-20?22:22??LU分解\LU\mainLU.asv

?????文件????????185??2014-10-21?17:12??LU分解\LU\mainLU.m

?????文件??????28955??2014-10-21?17:32??LU分解\LU.docx

?????目錄??????????0??2014-10-29?22:14??LU分解\LU

?????目錄??????????0??2014-10-29?22:14??LU分解

-----------?---------??----------?-----??----

????????????????30695????????????????????6