计算:1/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)+……+1/(x-2010)(x-20
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/06/05 23:50:10
计算:1/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)+……+1/(x-2010)(x-2011)
1/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)+……+1/(x-2010)(x-2011)
=1/(x-2)-1/(x-1)+1/(x-3)-1/(x-2)+1/(x-4)-1/(x-3)+.+1/(x-2011)-1/(x-2010)
=1/(x-2011)-1/(x-1)
=2010/[(x-2011)(x-1)]
再问: 您确定一定以及肯定是对的?
再答: 对的
再问: 如果对我会加分!
再答: 肯定对的
=1/(x-2)-1/(x-1)+1/(x-3)-1/(x-2)+1/(x-4)-1/(x-3)+.+1/(x-2011)-1/(x-2010)
=1/(x-2011)-1/(x-1)
=2010/[(x-2011)(x-1)]
再问: 您确定一定以及肯定是对的?
再答: 对的
再问: 如果对我会加分!
再答: 肯定对的
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