(-1X1/2)+(-1/2X1/3)+(-1/3X1/4)+……(-1/2012X1/2013)=这道题的解题方法,星期一就要期中了这货就要疯了SO……
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 14:12:54
![(-1X1/2)+(-1/2X1/3)+(-1/3X1/4)+……(-1/2012X1/2013)=这道题的解题方法,星期一就要期中了这货就要疯了SO……](/uploads/image/z/2704253-5-3.jpg?t=%28-1X1%2F2%29%2B%28-1%2F2X1%2F3%29%2B%28-1%2F3X1%2F4%29%2B%E2%80%A6%E2%80%A6%28-1%2F2012X1%2F2013%29%3D%E8%BF%99%E9%81%93%E9%A2%98%E7%9A%84%E8%A7%A3%E9%A2%98%E6%96%B9%E6%B3%95%2C%E6%98%9F%E6%9C%9F%E4%B8%80%E5%B0%B1%E8%A6%81%E6%9C%9F%E4%B8%AD%E4%BA%86%E8%BF%99%E8%B4%A7%E5%B0%B1%E8%A6%81%E7%96%AF%E4%BA%86SO%E2%80%A6%E2%80%A6)
(-1X1/2)+(-1/2X1/3)+(-1/3X1/4)+……(-1/2012X1/2013)=这道题的解题方法,星期一就要期中了这货就要疯了SO……
(-1X1/2)+(-1/2X1/3)+(-1/3X1/4)+……(-1/2012X1/2013)=
这道题的解题方法,星期一就要期中了这货就要疯了SO……
(-1X1/2)+(-1/2X1/3)+(-1/3X1/4)+……(-1/2012X1/2013)=这道题的解题方法,星期一就要期中了这货就要疯了SO……
原式=-(1-1/2+1/2-1/3+1/3-1/4+...+1/2012-1/2013)
=-(1-1/2013)
=-2012/2013