MCQOPTIONS
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				| 1. | 
                                    The impulse response of an initially relaxed linear system is e-2tu(t) . To produce a response te-2tU(t), the input must be equal to __________ . | 
                            
| A. | e-2t U(t) | 
| B. | e-lt U(t) | 
| C. | e-1u(t) | 
| Answer» B. e-lt U(t) | |