Question: 42. For the queue, let denote the number in the system left behind by the nth departure. (a) If Image what does represent? (b) Rewrite

42. For the queue, let denote the number in the system left behind by the nth departure.

(a) If Image what does represent?

(b) Rewrite the preceding as where Image Take expectations and let in Eq. (8.64) to obtain

(d) Argue that Image, the average number as seen by a departure, is equal to L.

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