1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4… 根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/72 5/6=1/2+完整题目是这样的:1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4…根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/725/6=1/2+1/3,7/12=1/
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/15 22:33:10
![1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4… 根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/72 5/6=1/2+完整题目是这样的:1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4…根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/725/6=1/2+1/3,7/12=1/](/uploads/image/z/74042-26-2.jpg?t=1%2F2%3D1-1%2F2%2C1%2F6%3D1%2F2-1%2F3%2C1%2F12%3D1%2F3-1%2F4%E2%80%A6+%E6%A0%B9%E6%8D%AE%E8%A7%84%E5%BE%8B%E8%AE%A1%E7%AE%97%E8%BF%99%E4%B8%AA%EF%BC%9A1%2F6%2B1%2F12%2B1%2F20%2B1%2F30%2B1%2F42%2B1%2F56%2B1%2F72+5%2F6%3D1%2F2%2B%E5%AE%8C%E6%95%B4%E9%A2%98%E7%9B%AE%E6%98%AF%E8%BF%99%E6%A0%B7%E7%9A%84%EF%BC%9A1%2F2%3D1-1%2F2%2C1%2F6%3D1%2F2-1%2F3%2C1%2F12%3D1%2F3-1%2F4%E2%80%A6%E6%A0%B9%E6%8D%AE%E8%A7%84%E5%BE%8B%E8%AE%A1%E7%AE%97%E8%BF%99%E4%B8%AA%EF%BC%9A1%2F6%2B1%2F12%2B1%2F20%2B1%2F30%2B1%2F42%2B1%2F56%2B1%2F725%2F6%3D1%2F2%2B1%2F3%2C7%2F12%3D1%2F)
1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4… 根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/72 5/6=1/2+完整题目是这样的:1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4…根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/725/6=1/2+1/3,7/12=1/
1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4… 根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/72 5/6=1/2+
完整题目是这样的:
1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4…
根据规律计算这个:
1/6+1/12+1/20+1/30+1/42+1/56+1/72
5/6=1/2+1/3,7/12=1/3+1/4,9/20=1/4+1/5
根据规律计算这个:
1+1/2-5/6+7/12-9/20+11/30-13/42
1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4… 根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/72 5/6=1/2+完整题目是这样的:1/2=1-1/2,1/6=1/2-1/3,1/12=1/3-1/4…根据规律计算这个:1/6+1/12+1/20+1/30+1/42+1/56+1/725/6=1/2+1/3,7/12=1/
1/6+1/12+1/20+1/30+1/42+1/56+1/72
=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
=1/2-1/9
=7/18
1+1/2-5/6+7/12-9/20+11/30-13/42
=1+1/2-1/2-1/3+1/3+1/4-1/4-1/5+1/5+1/6-1/6-1/7
=1-1/7
=6/7