1+1/2+1/6+1/12+1/20+1/30+1/42+1/52+1/72=?更正:1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 19:21:23
![1+1/2+1/6+1/12+1/20+1/30+1/42+1/52+1/72=?更正:1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72](/uploads/image/z/15212342-38-2.jpg?t=1%2B1%2F2%2B1%2F6%2B1%2F12%2B1%2F20%2B1%2F30%2B1%2F42%2B1%2F52%2B1%2F72%3D%3F%E6%9B%B4%E6%AD%A3%EF%BC%9A1%2B1%2F2%2B1%2F6%2B1%2F12%2B1%2F20%2B1%2F30%2B1%2F42%2B1%2F56%2B1%2F72)
1+1/2+1/6+1/12+1/20+1/30+1/42+1/52+1/72=?更正:1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1+1/2+1/6+1/12+1/20+1/30+1/42+1/52+1/72=?
更正:1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1+1/2+1/6+1/12+1/20+1/30+1/42+1/52+1/72=?更正:1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
你的题目写错了吧 ?
1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
=1+1/2 + 1/2 -1/3 +1/3 -1/4 +1/4 -1/5 +1/5 -1/6 +1/6-1/7+1/7-1/8 +1/8-1/9
=1+1-1/9
= 17/9
如题,答案已经给出.嘻嘻