 
			 
			MCQOPTIONS
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				| 1. | Find the function f2 (t) from the time t = 1 to 3 sec. | 
| A. | (-10t+20) [u (t-1) +u (t-3)] | 
| B. | (-10t+20) [u (t-1) – u (t-3)] | 
| C. | (-10t-20) [u (t-1) + u (t-3)] | 
| D. | (-10t-20) [u (t-1) – u (t-3)] | 
| Answer» C. (-10t-20) [u (t-1) + u (t-3)] | |