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先閱讀後已知點A(-1,m),B(-2,n)在二次函數y=-x的影像上,比較m和n的大小. 由於當x<0時,y=-x的函數值y隨x的增大而增大,而-1>-2,故m>n. 利用以上的解答資訊,解答下麵的問題: 已知點A(a+1,m)與點B(-1,n)在二次函數y=x的影像上,試比較m和n的大小.
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