3.12 Truncated times Assume that an activity commences at time T1 and terminates at time T2. The exact duration of the activity is T2 - T1, ident.gif (52 bytes) T. Now assume that times are recorded by some mechanism that records time x as     [x+alpha.gif (53 bytes)], for some fixed alpha.gif (53 bytes). Using this mechanism, the recorded duration of the activity is. [T2 + alpha.gif (53 bytes)] - [T1 + alpha.gif (53 bytes)].

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