（2008•静安区一模）计算：limn→∞(2n−4n2+2n−12n+2)=．

Question

（2008•静安区一模）计算：

lim

n→∞

(2n−(4n2+2n−1)/(2n+2))=______．

Answer 1

∵

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