题目内容
极限
=( )
| lim |
| n→2 |
| n2+2n-1 |
| 2n2+n |
A.
| B.1 | C.
| D.
|
极限
=
=
.
故选C.
| lim |
| n→2 |
| n2+2n-1 |
| 2n2+n |
| 22+2×2-1 |
| 2×22+2 |
| 7 |
| 10 |
故选C.
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极限
=( )
| lim |
| n→2 |
| n2+2n-1 |
| 2n2+n |
A、
| ||
| B、1 | ||
C、
| ||
D、
|