问题
填空题
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答案
(lim n→∞
-n)=n2+n lim n→∞ (
+n)(n+n2
-n)n2+n
+nn2+n
=lim n→∞
=n
+nn2+n lim n→∞
=1 1+ 1+ 1 n 1 2
故答案为：1 2
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|
(lim n→∞
-n)=n2+n lim n→∞ (
+n)(n+n2
-n)n2+n
+nn2+n
=lim n→∞
=n
+nn2+n lim n→∞
=1 1+ 1+ 1 n 1 2
故答案为：1 2