1. function y=f(x)
y=x**2-6;
endfunction
function xr=reglafalsa(xai,xbi,tol)
i=1;
ea(1)=100;
if f(xai)*f(xbi) < 0
xa(1)=xai;
xb(1)=xbi;
xr(1)=xa(1)-f(xa(1))*(xb(1)-xa(1))/(f(xb(1))-f(xa(1)));
printf('It. Xa Xb Xr
f(Xr) Error aprox %n');
printf('%2d t %11.7f t %11.7f t %11.7ft %11.7f
n',i,xa(i),xb(i),xr(i),f(xr(i)));
while abs(ea(i))>=tol,
if f(xa(i))*f(xr(i))< 0
xa(i+1)=xa(i);
xb(i+1)=xr(i);
end
if f(xa(i))*f(xr(i))> 0
xa(1)=xr(i);
xb(1)=xb(i);
end
xr(i+1)=xa(i+1)-f(xa(i+1))*(xb(i+1)-xa(i+1))/(f(xb(i+1))-
f(xa(i+1)));
ea(i+1)=abs((xr(i+1)-xr(i))/(xr(i+1)));
printf('%2d t %11.7f t %11.7f t %11.7f t %11.7ft %7.3f n',
i+1,xa(i+1),xb(i+1),xr(i+1),f(xr(i+1)),ea(i+1));
i=i+1;
end
else
printf('No existe una raíz en ese intervalo');
end
endfunction