已知1-1/2=1/2,1/2-1/3=1/6,1/3-1/4=1/12,1/4-1/5=1/20根据上面等式求;1/2+1/6+1/12+1/20的和?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 01:32:28
![已知1-1/2=1/2,1/2-1/3=1/6,1/3-1/4=1/12,1/4-1/5=1/20根据上面等式求;1/2+1/6+1/12+1/20的和?](/uploads/image/z/3962536-16-6.jpg?t=%E5%B7%B2%E7%9F%A51-1%2F2%3D1%2F2%2C1%2F2-1%2F3%3D1%2F6%2C1%2F3-1%2F4%3D1%2F12%2C1%2F4-1%2F5%3D1%2F20%E6%A0%B9%E6%8D%AE%E4%B8%8A%E9%9D%A2%E7%AD%89%E5%BC%8F%E6%B1%82%EF%BC%9B1%2F2%2B1%2F6%2B1%2F12%2B1%2F20%E7%9A%84%E5%92%8C%3F)
已知1-1/2=1/2,1/2-1/3=1/6,1/3-1/4=1/12,1/4-1/5=1/20根据上面等式求;1/2+1/6+1/12+1/20的和?
已知1-1/2=1/2,1/2-1/3=1/6,1/3-1/4=1/12,1/4-1/5=1/20根据上面等式求;1/2+1/6+1/12+1/20的和?
已知1-1/2=1/2,1/2-1/3=1/6,1/3-1/4=1/12,1/4-1/5=1/20根据上面等式求;1/2+1/6+1/12+1/20的和?
解原式=1-1/2+1/2-1\3+1\3-1\4+1\4-1\5
=1-1\5
=4\5
楼主就这样照抄,不懂欢迎追问