16.若数列 满足a1=2,an+1=1+an/1-an ,则该数列的前2013项的乘积______.
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16.若数列 满足a1=2,an+1=1+an/1-an ,则该数列的前2013项的乘积______.
16.若数列 满足a1=2,an+1=1+an/1-an ,则该数列的前2013项的乘积______.
16.若数列 满足a1=2,an+1=1+an/1-an ,则该数列的前2013项的乘积______.
将a1=2代入求出a2=-1,a3=0.5,a4=2,a5=-1,a6=0.5不难发现是个周期函数
并且是三个为一周期3个的乘积为-1
∴S1***S2013=2013/3*(-1)=-1
有疑问可以继续追问哦.我今天一直在线
答案是2
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