(2008•辽宁)limn→∞1+3+5+…+(2n−1)n(2n+1)等于( )
1个回答
依题
lim
n→∞
1+3+5++(2n−1)
n(2n+1)=
lim
n→∞
n2
2n2+n=
1
2.
故选B
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