Sheet 3. Sequences and Their Limits
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Sheet 3. Sequences and Their Limits
Faculty of Management Mathematics Exercises Sheet 3. Sequences and Their Limits Exercise 3.1. Give the rst ve terms of each sequence dened below (−1)n 1 + (−1)n c) an = + n 2 (−1)n a) an = 2 b) an = n d) an = (−1)n+1 · 3 n+1 e) an = −n (2 + (−1)n ) Exercise 3.2. Find the limits: a) lim (n2 + 5n − 6) n→∞ 3 6n − 1 3 n→∞ 3n + 2n − 4 n−1 g) lim 2 n→∞ n + 2n − 1 µ ¶3 2n + 3 j) lim n→∞ n+1 √ 2 (3 − n) m) lim n→∞ 5 + 4n √ ¡ ¢ p) lim 3n − 9n2 + 1 n→∞ √ ¡ ¢ s) limn→∞ 3n − 9n2 + 6n − 5 d) lim 1 v) lim 2 n n→∞ 2n+1 − 3n+2 n→∞ 3n+2 µ ¶n+1 2 ab) lim 1 + n→∞ n+1 ¶ n2 µ 2 n +9 ae) lim n→∞ n2 y) lim sin n n→∞ n + 1 ah) lim Last update: October 17, 2008 b) lim (−2n7 + 3n2 − 4) n→∞ n2 − 2 n→∞ n n3 + 2n − 1 h) lim n→∞ n4 + n e) lim 1 − 2n √ n→∞ 2 + n r 9n2 + 4n n) lim n→∞ n2 + 3 ¡√ ¢ q) lim 4n2 + 9n − 2 − 2n n→∞ ¡√ √ ¢ t) limn→∞ n+1− n k) lim n n 3 −2 4n − 3n ¶3n µ 1 z) limn→∞ 1 + n ¶2n µ n+4 ac) lim n→∞ n ¶2n2 µ 2 n −1 af) limn→∞ n2 w) limn→∞ ai) lim n→∞ n2 n sin (3n + 1) +1 n2 + 3n n→∞ n2 − 1 −3n3 + 1 f) lim n→∞ n2 + 4 (1 − 2n)3 i) lim n→∞ (2n + 3)2 (1 − 7n) √ 2+ n l) lim n→∞ 1 − 2n c) lim o) lim ¡√ n→∞ r) limn→∞ 2n − 1 − ¡√ √ n−7 ¢ 4n2 + 5n − 2 − 2n n u) lim e n+1 n→∞ 4n−1 − 5 n→∞ 22n − 7 ¶n µ 1 aa) limn→∞ 1 − 3n ¶n µ n−1 ad) lim n→∞ n+2 ¶n2 µ 2 n +2 ag) limn→∞ n2 + 1 √ 3 n2 sin n aj) lim n→∞ n+1 x) lim 1 ¢