Solution 2.9.1.8 First, F 1 (s) = Z T 0 Ae ;st dt + Z 2T T e ;2t e ;st dt = ;A s [e ;st ] T 0 + ;1 s +2 [e ;(s+2)t ] 2T T = A(1;e ;Ts ) s + e ;4T e ;2Ts ;e ;2T e ;Ts s +2 1