Solve the recurrence equations:
$$\,\,\,\,\,\,\,\,\,\,T\left( n \right) = \left( {{n \over 2}} \right) + 1$$
$$\,\,\,\,\,\,\,\,\,\,\,T\left( 1 \right) = 1$$

State an undesirable characteristic of each of the following criteria for measuring performance of an operating system:
(a) Turn around time. (b) Waiting time.