若函数f x 2sinwx w 0:Comfortably Numb

 Hello.
 Is there anybody in there?
 Just nod if you can hear me.
 Is there anyone home?
 Come on, now.
 I hear you're feeling down.
 Well I can ease your pain,
 Get you on your feet again.
 Relax.
 I need some information first.
 Just the basic facts:
 Can you show me where it hurts?
 There is no pain, you are receding.
 A distant ship's smoke on the horizon.
 You are only coming through in waves.
 Your lips move but I can't hear what you're sayin'.
 When I was a child I had a fever.
 My hands felt just like two balloons.
 Now I got that feeling once again.
 I can't explain, you would not understand.
 This is not how I am.
 I have become comfortably numb.
 Ok.
 Just a little pinprick.
 There'll be no more --Aaaaaahhhhh!
 But you may feel a little sick.
 Can you stand up?
 I do believe it's working. Good.
 That'll keep you going for the show.
 Come on it's time to go.
 There is no pain, you are receding.
 A distant ship's smoke on the horizon.
 You are only coming through in waves.
 Your lips move but I can't hear what you're sayin'.
 When I was a child I caught a fleeting glimpse,
 Out of the corner of my eye.
 I turned to look but it was gone.
 I cannot put my finger on it now.
 The child is grown, the dream is gone.
 I have become comfortably numb.
 Over...