The transient analysis of finite-state, continuous-time Markov chains
is determined using Pade approximations in the complex plane. Many app
lications are required to provide interruption-free service for long m
issions. For these systems, the probability that a system operates wit
hout failure during some interval is of interest. We Will consider the
general problem of finding the state probability vector of a discrete
-state, continuous-time Markov chain. We employ Pade approximation as
our analytical tool to determine the state probabilities.