|1-1/2|+|1/2-1/3|+|1/3-1/4|+|14/-+···+|1/2012-1/2013|+|1/2013-1/2014|=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 10:59:13
![|1-1/2|+|1/2-1/3|+|1/3-1/4|+|14/-+···+|1/2012-1/2013|+|1/2013-1/2014|=?](/uploads/image/z/467643-3-3.jpg?t=%7C1-1%2F2%7C%2B%7C1%2F2-1%2F3%7C%2B%7C1%2F3-1%2F4%7C%2B%7C14%2F-%2B%C2%B7%C2%B7%C2%B7%2B%7C1%2F2012-1%2F2013%7C%2B%7C1%2F2013-1%2F2014%7C%3D%3F)
|1-1/2|+|1/2-1/3|+|1/3-1/4|+|14/-+···+|1/2012-1/2013|+|1/2013-1/2014|=?
|1-1/2|+|1/2-1/3|+|1/3-1/4|+|14/-+···+|1/2012-1/2013|+|1/2013-1/2014|=?
|1-1/2|+|1/2-1/3|+|1/3-1/4|+|14/-+···+|1/2012-1/2013|+|1/2013-1/2014|=?
可以直接开绝对值啊,然后相邻两项约掉,答案为1-1/2014=2013/2014