证明: H,小(( 2丌 ∫G)/(kdo 2兀 Go)G(-01)o =1证明： [ ] ( ) ( ) ò ¥ -¥ - F f × f = f x f x e dx iwx 1 2 1 2 ( ) ( ) ò ò ¥ -¥ - ¥ -¥ ¢ = f x × G ¢ e d ¢ e dx iw x iwx w w p 1 2 2 1 ( ) ( ) ( ) ò ò ¥ -¥ ¥ -¥ - - ¢ = w¢ × w¢ p w w G f x e dx d i x 2 1 2 1 ò ¥ -¥ = w¢ w -w¢ w¢ p G ( )G ( )d 2 1 2 1 [ ] [ ] 1 2 2 1 = F f * F f p