M/M/s System With Feedback. Consider the M/M/s queueing system in Example 60 with the modification that upon completing its service, an item is either fed back for another service with probability r,...

M/M/s System With Feedback. Consider the M/M/s queueing system in Example 60 with the modification that upon completing its service, an item is either fed back for another service with probability r, or it exits the system with probability 1 − r. In this case, the process X(t) representing the number of items in the system would not change state at a feed-back departure — it experiences a fictitious jump. Justify that X(t) is a CTMCExample 60