摘要:
A=[1,-1,1,-4;5,-4,3,12;2,1,1,11;2,-1,7,-1] L=eye(length(A)) %开始消元过程 for k=1:(length(A)) a=A(k,k) for i=k+1:(length(A)) c=-A(i,k) L(i,k)=-c./a for j=1: (length(A)) A(i,j)=A(i,j)+c.... 阅读全文
摘要:
A=[1,-1,1,-4;5,-4,3,12;2,1,1,11;2,-1,7,-1] Adet=1 %开始消元过程 for k=1:(length(A)) a=A(k,k) Adet = Adet.*a for i=1:(length(A)) A(k,i)=A(k,i)/a end for i=k+1:(length(A)) c=-A(i,k... 阅读全文
摘要:
e=sym('e') E=[1,0,0,0;0,1,0,0;0,0,1,0;0,0,0,1] E=e.*E A=[1,-1,1,-4;5,-4,3,12;2,1,1,11;2,-1,7,-1] A=A-E Adet=1 %开始消元过程 for k=1:(length(A)) a=A(k,k) Adet = Adet.*a for i=1:(length(A)) A(... 阅读全文