②已知FQ(x)=G(o) /求FG(o) cos aot G i/求F Sinaai 解:G(o) cos aot= G(or ioat ioat .FIG(ocosaat② 已知F[j(x)] = G(w) /. [ ( )cos ] 1 i F G w awt 求 - /. [ sin ] 1 a t a G ii F w w - w 求 [ ] 2 ( ) ( ) cos i at i at e e G G a t w w w w w - 解：Q = + [ ( )cos ] 1 F G w awt - \