Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

BloopityBloop

  • 2 years ago

Another min/max. Two intervals, both increasing. No local min or max? Work in reply.

  • This Question is Closed
  1. BloopityBloop
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[f(x)5x^3+3x^5\] \[f'(x)=15x^2+15x^4\] \[=15x^2(1+x^2)\] Critical points are just x=0 from 15x^2, because the second multiplicant (1+x^2) can not equal 0. So, draw number line: \[f'(-1)= + * + = +\] \[f'(1)= + * + = +\] |dw:1352677866529:dw| So, I believe this means there is no local min or max. So if the question is to find local max and min, is my answer to state that there is no local min or max?

  2. asnaseer
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    your conclusion is correct.

  3. BloopityBloop
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ok good. The situation was different than what I usually see, so I wanted to make sure. Thanks.

  4. asnaseer
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yw :)

  5. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find 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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.