Find the general solution for a degraded system that fails completely from the degraded state only. In other words, the system must degrade before it can fail. Also show that the MTTF for this system...

Find the general solution for a degraded system that fails completely from the degraded state only. In other words, the system must degrade before it can fail. Also show that the MTTF for this system is given by 11 A, + II A2 where A, is the rate at which the system degrades and A2 is the rate at which the system fails from the degraded state.