已知数列{an}中,a1=1,an=an+1+2(n≥1),则a100=( )A.199B.-199C.197D.-19
已知数列{an}中,a1=1,an=an+1+2(n≥1),则a100=()A.199B.-199C.197D.-197...
已知数列{an}中,a1=1,an=an+1+2(n≥1),则a100=( )A.199B.-199C.197D.-197
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