-1x1/2=-1+1/2 -1/2x1/3=-1/2+1/3 你发现的规律是:( ).
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![-1x1/2=-1+1/2 -1/2x1/3=-1/2+1/3 你发现的规律是:( ).](/uploads/image/z/3955123-19-3.jpg?t=-1x1%2F2%3D-1%2B1%2F2+++++-1%2F2x1%2F3%3D-1%2F2%2B1%2F3++%E4%BD%A0%E5%8F%91%E7%8E%B0%E7%9A%84%E8%A7%84%E5%BE%8B%E6%98%AF%EF%BC%9A%EF%BC%88+++++++%EF%BC%89.)
-1x1/2=-1+1/2 -1/2x1/3=-1/2+1/3 你发现的规律是:( ).
-1x1/2=-1+1/2 -1/2x1/3=-1/2+1/3 你发现的规律是:( ).
-1x1/2=-1+1/2 -1/2x1/3=-1/2+1/3 你发现的规律是:( ).
-1/n x 1/(n+1)=-1/n + 1/(n+1)