│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
问题描述:
│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
答