4
．常用序列的极限
=
=
=
e
=
=
e
(1+1+
)=
e
n
(
-1)=
(
a
>
0)
=1 (
a
>
0)
=1
=
∞
[(1+
)-
]=
γ
式中
γ
=
为欧拉常数
.
=
=
=e=
===e=
=e(1+1+
)=en(
-1)=
(a>0)
=1
(a>0)
=1
=∞
[(1+
)-
]=γ
为欧拉常数.