8/18/2019 Program Eliminasi

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%Program Eliminasi Gauss

function x = GAUSS(n, A, b)

% fungsi untuk melakukan eliminasi Gauss

% untuk menyelesaikan SPL Ax = b

% n = imensi matriks

% A = matriks koe!sien

% b = "ektor ruas kanan

n=in#ut($masukkan imensi matriks $)

A=&' *+ *-*+ . *'-*' * +/-

b=&.*01-+2*'-.+*3/-

"b = (+n)-

for i=+n+

% #roses "i#oting

ib = "b(i)-

maxi = abs(A(ib,i))-

bar = i-

ibx = ib-

for bars=i4+n

ib="b(bars)-

if (abs(A(ib,i))) 5 maxi

maxi = abs(A(ib,i))-

bar = bars-

ibx = ib-

en

en

ib = "b(i)-

8/18/2019 Program Eliminasi

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"b(i) = ibx-

"b(bar) = ib-

% #roses eliminasi

ib = "b(i)-

for 6=i4+n

ibx = "b(6)-

m = A(ibx,i) 7 A(ib,i)-

for k=in

A(ibx,k) = A(ibx,k) 4 m8A(ib,k)-

en

b(ibx) = b(ibx) 4 m8b(ib)-

en

en

%subsitusi balik

ib = "b(n)-

x(n) = b(ib)7A(n,n)-

for i=n+++

ib = "b(i)-

sum = b(ib)-

for 6=i4+n

sum = sum 9 A(ib,6)8x(6)-

en

x(i) = sum 7A(ib,i)-

en

return