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已知数列{an}满足a1=-2,an+1(下标)=2+2an/(1-an),则a4=
人气:125 ℃ 时间:2020-02-05 23:49:30
解答
a1=-2,an+1(下标)=2+2an/(1-an),
a2=2/3
a3=6
a4=-2/5
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