题目

题型：静安区一模难度：来源：

计算：

lim

n→∞

(2n-

4n2+2n-1

2n+2

)=______．

答案

∵

lim

n→∞

(2n-

4n2+2n-1

2n+2

)=

lim

n→∞

4n2+4n-4n2-2n+1

2n+2

=

lim

n→∞

2n+1

2n+2

=

lim

n→∞

1+ 1 2n

1+ 1 n

=1
故答案为：1