│1/2-1│+│1/3-1/2│+│1/4-1/3│+│1/5-1/4│+……+│1/2011-2010│+│1/2012-1/2011│求答案啊各位大神QAQ明天就回校了求答案QAQ今晚坐等啊QAQ

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/28 05:49:17
│1/2-1│+│1/3-1/2│+│1/4-1/3│+│1/5-1/4│+……+│1/2011-2010│+│1/2012-1/2011│求答案啊各位大神QAQ明天就回校了求答案QAQ今晚坐等啊QAQ

│1/2-1│+│1/3-1/2│+│1/4-1/3│+│1/5-1/4│+……+│1/2011-2010│+│1/2012-1/2011│求答案啊各位大神QAQ明天就回校了求答案QAQ今晚坐等啊QAQ
│1/2-1│+│1/3-1/2│+│1/4-1/3│+│1/5-1/4│+……+│1/2011-2010│+│1/2012-1/2011│
求答案啊各位大神QAQ明天就回校了求答案QAQ今晚坐等啊QAQ

│1/2-1│+│1/3-1/2│+│1/4-1/3│+│1/5-1/4│+……+│1/2011-2010│+│1/2012-1/2011│求答案啊各位大神QAQ明天就回校了求答案QAQ今晚坐等啊QAQ
│1/2-1│+│1/3-1/2│+│1/4-1/3│+│1/5-1/4│+……+│1/2011-2010│+│1/2012-1/2011│
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+...+1/2010-1/2011+1/2011-1/2012
=1-1/2012
=2011/2012