6. Convolution f(0)*f2()分F(s)F2(s)分f2()*f( (s)= V1(s)2(S) (s+a(s+B) s+a S+B H1()= U1(t)=e(t) S+al V2(s)= U2()=e-Bt( S+B D()=C1(sH2(s分2=01()+(O)=D(2(t-2 So e -adu(aye B(-au(t-a)di=le BeBida e-ae(p-a)ddn =e Bt 1 (B-a) e-pt (B-a)t eat B t u(t) B B-a6. Convolution ( ) ( ) ( ) ( ) ( ) ( ) 1 2 1 2 2 1 f t  f t  F s F s  f t  f t ( ) ( ) 1 1 ( )( ) 1 ( ) 1 2 V s V s s s s s V s = + • + = + + =     ( ) ( ) 1 ( ) 1 1 t e u t s V s  t   − = + = ( ) ( ) 1 ( ) 2 2 t e u t s V s  t   − = + =  ()2 (t )d 0 = 1 −    − − = t t e e e d 0       0 1 ( ) t e e  t      − − − = u(t) e e t t     − − = − − ( )  ( ) ( ) ( ) ( ) 1 2 1 2 1  t = L V S V s = t  t −        e u e u t d t ( ) ( ) ( ) 0 = −  − − −   − − = t t e e d 0 ( )       1 ( ) ( ) e u t e t t − − = − −     