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				| 1. | A system function H(s) = ( frac{V(s)}{I(s)} = frac{s}{(s+4)} ). For i(t) = u(t) and value of system is 0 for t<0. Then v(t) is ___________ | 
| A. | 1 e<sup>-4t</sup> | 
| B. | e<sup>-4t</sup> | 
| C. | e<sup>4t</sup> | 
| D. | 1 + e<sup>-4t</sup> | 
| Answer» C. e<sup>4t</sup> | |