1. function y=g(x)
y=300-80.425*x+201.0625*(1-exp(-(0.1)*x/0.25));
endfunction
function x=puntofijo(x0,tol)
i=1;
ea(1)=100;
x(1)=x0;
while abs(ea(i))>=tol,
x(i+1) = g(x(i));
ea(i+1) = abs((x(i+1)-x(i))/x(i+1));
i=i+1;
end
printf(' i t X(i) Error aprox (i) n');
for j=1:i;
printf('%2d t %11.7f t %7.3f n',j-1,x(j),ea(j));
end
endfunction