A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
how can we solve this question to investigate whether it is converging or diverging? => an = cos(pie)(n)
anonymous
 5 years ago
how can we solve this question to investigate whether it is converging or diverging? => an = cos(pie)(n)

This Question is Closed

nowhereman
 5 years ago
Best ResponseYou've already chosen the best response.0I guess you mean \[a_n = \cos(\pi n)\] So why don't you write down this series explicitly? Then you can see whether it converges or not.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0This sequence will oscillate between 1 and 1. By the definition of the limit of a sequence, it does not converge (convergence requires a single value). It therefore does not converge.

nowhereman
 5 years ago
Best ResponseYou've already chosen the best response.0very good, no more thinking required by the original poster

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I have actually thought about it again before reading the replies :) thank you.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.