. , x(n) = .
x (n) x (n+1), x (n+1) . , x (n)< x (n+1). x(n) .
, .
. = -1.
. = k.
. .
[2]: 7, . 48-50.
6. [2]: 8, . 52-53.
7. [2]: 8, . 54.
8. [2]: 6, . 43-45; 8, . 55.
9. [2]: 6, . 43-45; 7, . 46-48.
1. B , b = supB bÏB. , b B.
2. { x n} . , ∀m ∈ N ∃ n ≥ m , x n£ x m.
3. , > 1, ( )
(1 + x) n ³ 1 + n, n > 1,
= 0.
4. , . , c .
3. , limn→∞ n k/2 n = 0, limn→∞n(a 1/n− 1) = ln a, a > 0.
4. limn→∞ x n = +∞. , limn→∞(x1++xn)/n= +∞.
5. ∀n∈Npn> 0 limn→∞pn = p. , limn→∞(p1...pn)1/n= p.
6. = e, , limn→∞n/(n!)1/n = e.
7. , an = (1 + 1/n)n+p , p≥ ½.
8. , ∀r ∈ Q: |r| < 1 1+ r£er£ 1 + r/(1 - r).
9. { x n} , .. ∃c > 0: ∀n ∈ N <c. , { x n} .
10. 0£ x m+n£ x m + x n. , ∃limn→∞ x n/n.
11. ,
(a) n→∞ (a n + b n) £ n→∞ a n + n→∞ b n, ;
(b) limn→∞ a n = a n→∞ b n = b, n→∞ a n b n = ab;
(c) n→∞ a n = − n→∞(− a n).
12. limn→∞ a n = +∞. , ∃minn∈N a n.
13. limn→∞ a n = a. , { a n} , , .
14. s n = a 1 + + a n → ∞, a k> 0, limn→∞ a n = 0. , { s n} [0;1].
15. limn→∞(s n+1 − s n) = 0 , limn→∞ s n, l = n→∞ s n, L = n→∞ s n. , { s n} [ l; L ].
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16. (a) a n> 0 limn→∞ a n = 0. , n , a n>max(a n+1, a n+2,...).
(b) a n> 0 n→∞ a n = 0. , n , a n<min(a 1, a 2,..., a n−1).