问题
解答题
求极限
|
答案
(lim n→∞
+1 n2+1
+2 n2+1
+…+3 n2+1
)2n n2+1
=lim n→∞
(1+2n)2n 2 n2+1
=lim n→∞ 2n2+n n2+1
=2．
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求极限
|
(lim n→∞
+1 n2+1
+2 n2+1
+…+3 n2+1
)2n n2+1
=lim n→∞
(1+2n)2n 2 n2+1
=lim n→∞ 2n2+n n2+1
=2．