Find the imin and limsup oP the followi uences denoted lou Sn n+1 (b) sn = n (1+(-4)^) + n.)((-1)...
a. 1 4. Let Sn =EX=1 Show that In(n+1) < Sn S 1+In n b. Show that {an} = {Sn - In n} Show that sequence {an} converges C.
Question 1 please
1. True or false: (15 pts) {(-1)" tan (TC/2-3/n} is oscillating. (b) 1/2-1/4+1/6-1/8+1/10-..... converges conditionally. A convergent sequence is always Cauchy. {1/n) is a Cauchy sequence. (1-3)-(1-31/2)+(1-313)-(1-314 )+.....diverges. 2. Find limit sup and limit inf of the following sequences: (10 pts) (a){c+4) sin ng (b) {(1+m+)"} Limsup= limsup= Lmitinf= liminf= 3. Prove that either the following sequence has a limit or not. (20 pts) (a) 2n (b) n2+4n+2 n+6vn n-1
Suppose (Sn) is a sequence such that, for all n 1, we have 1 Sn+1 – snl < n2 Show that (sn) converges
All of question 2 please
1. True or false: (15 pts) {(-1)" tan (TC/2-3/n} is oscillating. (b) 1/2-1/4+1/6-1/8+1/10-..... converges conditionally. A convergent sequence is always Cauchy. {1/n) is a Cauchy sequence. (1-3)-(1-31/2)+(1-313)-(1-314 )+.....diverges. 2. Find limit sup and limit inf of the following sequences: (10 pts) (a){c+4) sin ng (b) {(1+m+)"} Limsup= limsup= Lmitinf= liminf= 3. Prove that either the following sequence has a limit or not. (20 pts) (a) 2n (b) n2+4n+2 n+6vn n-1
o Consider the series an whose partial sums are denoted as Sn for n > 1. n= 1 (1) If an = m+2, does an converge or diverge? Explain. n = 1 (2) If Sn = 7+2, does [ an converge or diverge? Explain. 111
3. Give an example of a sequence {sn} that is not monotone, but the se- quence {s} is monotone. (7 points) carlo ST 4. Let $i = 4 and 9n+1 = (38m + 1)/5 for n 2 1. Show that the sequence {sn} is bounded and monotone, and find its limit s. (10 points)
Please answer all parts.
(2) (a) Give an example of sequences (sn) and (tn) such that lim sn ntoo 0, but the sequence (sntn) does not converge does not converge.) (b) Let (sn) and (tn) be sequences such that lim sn (Prove that it O and (tn пH00 is a bounded sequence. Show that (sntn) must converge to 0. 1 increasing subsequence of it (b) Find a decreasing subsequence of it (3) Consider the sequence an COS (а) Find an...
In questions 1-8, find the limit of the sequence. sin n cos n 2. 37 /n sin n 3. 4. cos rn 5. /n sin n o cos n n! 9. If c is a positive real number and lan) is a sequence such that for all integer n > 0, prove that limn →00 (an)/n-0. 10. If a > 0, prove that limn+ (sin n)/n 0 Theorem 6.9 Suppose that the sequence lan) is monotonic. Then ta, only if...
6. Let si = 4 and sn +1 (sn +-) for n > 0. Prove lim n→oo sn exists and find limn-oo Sn. (Hint: First use induction to show sn 2 2 and the.show (sn) is decreasing)
Write S = 1 n(n-1) as a telescoping series and find its sum. n=4 Sn = 1/(n-1)-1/n S = 1/3 Note: You can earn partial credit on this problem.