1/(1/2)+1/(2*3)+1/(3*4)+...+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.1/(1/2)+1/(2*3)+1/(3*4)+.+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.
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![1/(1/2)+1/(2*3)+1/(3*4)+...+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.1/(1/2)+1/(2*3)+1/(3*4)+.+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.](/uploads/image/z/1636434-18-4.jpg?t=1%2F%281%2F2%29%2B1%2F%282%2A3%29%2B1%2F%283%2A4%29%2B...%2B%2F%282007%2B2008%29%3D+%2F%E6%98%AF%E9%99%A4%E5%8F%B7%2C%2A%E4%B8%BA%E4%B9%98%E5%8F%B7%2C%E5%9C%A8%E7%BA%BF%E7%AD%89%2C%E6%9C%80%E5%A5%BD%E6%9C%89%E8%A7%A3%E6%B3%95.1%2F%281%2F2%29%2B1%2F%282%2A3%29%2B1%2F%283%2A4%29%2B.%2B%2F%282007%2B2008%29%3D++++++++++++++++%2F%E6%98%AF%E9%99%A4%E5%8F%B7%2C%2A%E4%B8%BA%E4%B9%98%E5%8F%B7%2C%E5%9C%A8%E7%BA%BF%E7%AD%89%2C%E6%9C%80%E5%A5%BD%E6%9C%89%E8%A7%A3%E6%B3%95.)
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1/(1/2)+1/(2*3)+1/(3*4)+...+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.1/(1/2)+1/(2*3)+1/(3*4)+.+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.
1/(1/2)+1/(2*3)+1/(3*4)+...+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.
1/(1/2)+1/(2*3)+1/(3*4)+.+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.
1/(1/2)+1/(2*3)+1/(3*4)+...+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.1/(1/2)+1/(2*3)+1/(3*4)+.+/(2007+2008)= /是除号,*为乘号,在线等,最好有解法.
其实很简单,大哥或大姐
上式:S=(1-1/2)+(1/2-1/3)+(1/3-1/4)+...+(1/2007-1/2008)=1-1/2008=2007/2008