Time-weighted performance-index evaluation

Consideration is given to the evaluation of performance indexes of the type ¿0¿ tkf(t)dt where f(t) = e1(t)e2(t), with e1 and e2 both possessing rational Laplace transforms. The method is algebraic in character and does not require factoring of the denominators of the Laplace transforms of e1(t) and e2(t).