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Método de jacobi
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clc | |
clear | |
format long | |
% Jacobi para função: | |
% 3*x1 - x2 - x3 = 1 | |
% x1 + 3*x2 + x3 = 5 | |
% 2*x1 - 2*x2 + 4*x3 = 4 | |
function xi = jacobi(numeroPassos, criterio) | |
passo = 0; | |
xi = [0,0,0]; | |
dif = 1; | |
while(passo < numeroPassos && dif > criterio) | |
x(1) = (1 + xi(2) + xi(3))/3; | |
x(2) = (5 - xi(1) - xi(3))/3; | |
x(3) = (4 - 2*xi(1) + 2*xi(2))/4; | |
dif = max(abs(x - xi)); | |
xi = x; | |
passo++; | |
end | |
end | |
xAproximadoMenosPreciso = jacobi(30, 1e-4) | |
xAproximadoMaisPreciso = jacobi(60, 1e-8) | |
erroTruncamentoEstimado = max(abs(xAproximadoMaisPreciso - xAproximadoMenosPreciso)) | |
% erroArredondamento = max(abs(valorAproximadoEmFloat - valorAproximadoEmDouble)) |
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