On the linear-slope delay approximation

The approximation technique, presented in a previous letter, is extended to linear-slope delay functions. The approximation polynomial is, again, of the form Pn(s)= M(s) + N(s)k. The zeros of the M(s) and N(s) can be found with the help of the simple relation or by using the presented diagram. Although the obtained functions do not pretend to be used as a final approximation to the desired ideal, they can be successfully utilized as a starting point for perturbation techniques.