2 設 L{ f (t)}  為 f (t)之拉氏轉換，下列何者為錯？ 
(A) L{af (t) + bg(t)} = L{af (t)}+ L{bg(t)} 
(B) L{af (t) + bg(t)} = aL{ f (t)}+ bL{g(t)} 
(C) L{af (t) *bg(t)} = aL{ f (t)}×bL{g(t)}，*為迴旋積分 
(D) L{af (t)×bg(t)} = aL{ f (t)}×bL{g(t)}