03/21/2016, 01:26 PM

I now use the integral method with g" and g " ".

So the second and fourth derivative.

The Logic is that the odd derivatives do not contribute to the abs of the derivatives of f.

So taking into account g " " Gets me closer to the abs of the n th deriv of f , which is usually An improvement.

Also using g " " " might be too much , too close to the abs , unless of course f is entire and has more than 90 % positive derivatives , and all derivatives strictly decreasing( from n th to n+1 th ).

Regards

Tommy1729

So the second and fourth derivative.

The Logic is that the odd derivatives do not contribute to the abs of the derivatives of f.

So taking into account g " " Gets me closer to the abs of the n th deriv of f , which is usually An improvement.

Also using g " " " might be too much , too close to the abs , unless of course f is entire and has more than 90 % positive derivatives , and all derivatives strictly decreasing( from n th to n+1 th ).

Regards

Tommy1729