1.已知数列{an}满足a1=1,a(n+1)(n+1为角标)=an+2,且前n项的和味Sn求(1)求数列{Sn/n}的前n项和Tn(2)求数列{1/Tn}的前n项和2.解不等式a(x-1)/(x-2)>2
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