问题描述:
x分别为1/2005,1/2004,1/2003,1/2002,1/2001,1/2000,2000,2001.2002,2003,2004,2005
x分别为1/2005,1/2004,1/2003,1/2002,1/2001,1/2000,2000,2001,2002,2003,2004,2005时所有(x²)/(1+x²)的值的和是多少
x分别为1/2005,1/2004,1/2003,1/2002,1/2001,1/2000,2000,2001,2002,2003,2004,2005时所有(x²)/(1+x²)的值的和是多少
问题解答:
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