Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
← 55 members online
 0 viewing
Find all open intervals on which f(x)=x/(x^2+x2) is decreasing. I found that f'(x)=(x^2+2)/(x^2+x2)^2 but what do I do after that?
 one year ago
 one year ago
Find all open intervals on which f(x)=x/(x^2+x2) is decreasing. I found that f'(x)=(x^2+2)/(x^2+x2)^2 but what do I do after that?
 one year ago
 one year ago

This Question is Closed

frxBest ResponseYou've already chosen the best response.1
So when a function is decreasing it's derivitive is negative, so you simply set the inequality \[\frac{ (x ^{2}+2) }{ (x ^{2}+x2)^{2} } < 0\]
 one year ago

IdealistBest ResponseYou've already chosen the best response.0
So is the answer (negative infinity, 2)U(2, 1)U(1, infinity)?
 one year ago
See more questions >>>
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.