已知数列{an}满足an+1=(2+n)an/n +1 证明an/n是等差数列 a1=1
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下标和分数不好打,只好写出来了,字写得难看,别介意.不懂可以追问,一定尽力解答,望采纳.祝春节快乐!
注:知道an/n是等差后,只要再求a2,用a2/2-a1/1就能算公差了.
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