Oblicz granice ci¡gów o wyrazie ogólnym an: 1. an = 6nn−5n−1, 3
2n2+n
2. an = (2n+1)(2n−3), 2
2n2+3n+1
√
3. a
n+3n+1
n = n
,
0
n2+2
4. an = 1−5n3 , −∞
2+n2
5. an = 2n+1, 0
3n−4
6. an = 22n+1−3, −2
5−3·4n
3
7. an =
1
√
,
2
n2+7n−n
7
√
√
8. an = n2 + 5n − 1 − 4n2 + 3, 52
√
√
√
9. a
2
n = n
2 −
2n2 + 3n,
−3
4
√
10. a
10
n =
2− n
√
,
1
n n+( 3 )n 4
1