急急急!快来帮帮忙啊~~急急急急~急急急急急急急急急!!!

2024-11-17 10:58:39
推荐回答(4个)
回答(1):

解:原式=(1/1-1/2)+(1/2-1/3)+(1/3-1/4)+...+(1/2000-1/2001)=1-1/2001=2000/2001

回答(2):

原式=(1/1-1/2)+(1/2-1/3)+(1/3-1/4)+...+(1/2000-1/2001)=1-1/2001=2000/2001

回答(3):

(1/1-1/2)+(1/2-1/3)+(1/3-1/4)+...+(1/2000-1/2001)=1-1/2001=2000/2001

回答(4):

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