The Laplace transform of the signal t3 u(t) is _____________

1.	The Laplace transform of the signal t³ u(t) is _____________
A.	( frac{3}{s^4} )
B.	( frac{-3}{s^4} )
C.	( frac{6}{s^4} )
D.	( frac{-6}{s^4} )
Answer» D. ( frac{-6}{s^4} )

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