I(s) = 25 = 25 2 2 ( + 4 + 20) ( + 2) + 16 = 25 = 25 { } 2 2 2 2 ( + 2) + 4 ( + 2) + 4 ( ) = − When t = 2 seconds; 25 −2t i(t) = e sin 4t 4 25 25 i(t) = e −2(2) sin 4(2) = (0.018)(0.139) 4 4 ( ) = . 87