[工学]13动态电路的复频域分析.pdf

()  F (s)  f (t)est dt 0  s=+j f (t) F(S) f (t)s 1 j  ( ) st f t 2j F (s)e dt 1 (t)   F (s) L[(t)]  f (t)est dt  (t)est dt 0 0  0   (t)dt 1 0  2   F (s) [L1( t)]  f (t)est dt  1( t)est dt 0 0    st 1 st 1  e dt  e 0  s s 0 3 e-at   1 F (s) L[eat ]  f (t)est dt  eat est dt 0