giai he phuong trinh bang matlab.hoangtrieu

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while 1
clear;
clc;
disp ('CHUONG TRINH GIAI HE PHUONG TRINH n AN')
disp ('Sinh vien: Bui To Hoang Trieu')
disp ('Lop: CD DH Dien3_k3')
n=input('ban nhap vao so an cua phuong trinh n=');
while 1
if isempty(n)
n=input('ban nhap lai so an phuong trinh n=');
else
break;
end;
end
disp ('ban nhap cac he so tu trai qua phai tu tren xuong duoi')
for j=1:n
for i=1:n
% disp(['nhap a[' num2str(i) ']=' ])
a(j,i)=input(['nhap a' num2str(j) num2str(i) ' = ']);
if isempty(a(j,i))
break;
end
end
b(j,1)=input(['nhap b' num2str(j) ' = ']);
end

a;
b;
c=inv(a)*b;
disp ('nghiem cua phuong trinh la: ')
for i=1:n
disp (['x' num2str(i) '=' num2str(c(i,1))])
end
r=input('BAN CO MUON TIEP TUC? Y/N [Y]: ','s');
if isempty(r)
r = 'Y';
end
if r=='N'
break
end;
end
clc
clear

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