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函數圖像左移1個組織,向下移動4個組織即以x+1代替x,y+4代替y,得到新的圖像對應的函數,囙此,把函數y=21-x+3的圖像向左移動1個組織,向下移動4個組織後,用x變成x+1,y→y+4,得到y+4=21-(x+1)+3的圖像,即y=(1…
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