(1/1×2)+(1/2×3)+(1/3×4)+…+(1/2010×2011)+(1/2012×2013)的值.(提示:1/1×2=1-1/2;1/2×3=1/2-1/3)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/17 04:42:19
(1/1×2)+(1/2×3)+(1/3×4)+…+(1/2010×2011)+(1/2012×2013)的值.(提示:1/1×2=1-1/2;1/2×3=1/2-1/3)(1/1×2)+(1/2×3

(1/1×2)+(1/2×3)+(1/3×4)+…+(1/2010×2011)+(1/2012×2013)的值.(提示:1/1×2=1-1/2;1/2×3=1/2-1/3)
(1/1×2)+(1/2×3)+(1/3×4)+…+(1/2010×2011)+(1/2012×2013)的值.(提示:1/1×2=1-1/2;1/2×3=1/2-1/3)

(1/1×2)+(1/2×3)+(1/3×4)+…+(1/2010×2011)+(1/2012×2013)的值.(提示:1/1×2=1-1/2;1/2×3=1/2-1/3)
很久没做数学题了……格式你自己写
=(1-1/2)+(1/2-1/3)+(1/3-1/4)……+(1/2012-1/2013)
=1-1/2013
=2012/2013