1.

The unit step response of a system is t2e-2t. The system function is H(s) is

A. \(\frac{2}{{{s^2}\left( {s + 2} \right)}}\)
B. \(\frac{{2s}}{{{{\left( {s + 2} \right)}^2}}}\)
C. \(\frac{2}{{{{\left( {s + 2} \right)}^3}}}\)
D. \(\frac{{2s}}{{{{\left( {s + 2} \right)}^3}}}\)
Answer» E.


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