function iter=newtRaph(func,dfunc,x0,accur,num_iter)
	iter(1) = x0;
	if(func(iter(1)) == 0)
		return;
	end
	for(i = 1:(num_iter))
		iter(i+1) = (iter(i) - func(iter(i))/dfunc(iter(i)));
		if(abs(iter(i+1)-iter(i)) < 10^(-accur))
			return;
		end
		if(func(iter(i+1)) == 0) 
			return;
		end
	end
end