1/(1×2)+1/(2×3)+1/(3×4)+``````1/(2004×2005)等于几简便算法是什么?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/26 01:43:36
![1/(1×2)+1/(2×3)+1/(3×4)+``````1/(2004×2005)等于几简便算法是什么?](/uploads/image/z/1668515-59-5.jpg?t=1%2F%281%C3%972%29%2B1%2F%282%C3%973%29%2B1%2F%283%C3%974%29%2B%60%60%60%60%60%601%2F%282004%C3%972005%29%E7%AD%89%E4%BA%8E%E5%87%A0%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E6%98%AF%E4%BB%80%E4%B9%88%3F)
1/(1×2)+1/(2×3)+1/(3×4)+``````1/(2004×2005)等于几简便算法是什么?
1/(1×2)+1/(2×3)+1/(3×4)+``````1/(2004×2005)等于几
简便算法是什么?
1/(1×2)+1/(2×3)+1/(3×4)+``````1/(2004×2005)等于几简便算法是什么?
拆
原式=1-1/2+1/2-1/3.+1/2004-1/2005=1-1/2005=2004/2005
不明吧可以hi我
原式=1-1/2+1/2-1/3+1/3-1/4+..+1/2004-1/2005=1-1/2005=2004/2005
1+1=田
1+1=1因为一群鸭加一群鸭等于一群鸭!
1+1=3一个男人加一个女人再生一个小孩等于3!
1+1=11
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