1. Prove formula XXXXXXXXXXby means of theorem 3.13. 2. A system is subjected to an age renewal policy with renewal interval as des- τ cribed in example 3.21. Determine the stationary availability of...

1. Prove formula (3.145) by means of theorem 3.13.

2. A system is subjected to an age renewal policy with renewal interval as des- τ cribed in example 3.21. Determine the stationary availability of the system by modeling its operation by an alternating renewal process.