Consider the two-unit system with parallel redundancy discussed in example 5.6 on condition that the lifetimes of the units are exponential with parameters λ 1 and λ 2 , respectively. The other model...

Consider the two-unit system with parallel redundancy discussed in example 5.6 on condition that the lifetimes of the units are exponential with parameters λ₁
and λ₂, respectively. The other model assumptions listed in example 5.6 remain valid.

Describe the behaviour of the system by a Markov chain and draw the transition graph.