IF E(1)=1, then E(n+1)=E(n)+1/(2n+1), So E(100)=1/199+1/197+1/19
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E(100)=1/199+1/197+1/197+.....+1/3+1=3.27869....
-jinjing-
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08/10/2012 postreply
14:15:05
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谢谢!忘了说请教啦!我再想想 E(n+1)=E(n)+1/(2n+1)
-绿袖儿-
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08/10/2012 postreply
15:32:18
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谢题!We can get it when n=1,2,3 .if you are not mathematician.
-jinjing-
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08/10/2012 postreply
16:05:58