设数列{An},A1=5/6,若以A1A2A3.An为系数的二次方程An-1X^2-AnX+1=0都有根αβ满足3α-αβ+3β=
设Tn=Sn=11An,当n为何值时,Tn有最小值
人气：167 ℃ 时间：2020-04-01 01:28:24
解答
3α-αβ+3β= ?等什么?是1吗?
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