Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

moneybird Group Title

Look at interval [0,8] of graph from the following link: http://www.flickr.com/photos/57417292@N03/6335164067/ 1. For what values of x does the function have a local maximum on (0,8) 2. Local minimum 3. absolute maximum. I think it's none. 4. absolute minimum. I think it's 5

  • 3 years ago
  • 3 years ago

  • This Question is Closed
  1. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Link doesn't work.

    • 3 years ago
  2. moneybird Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    Here's the link: http://www.flickr.com/photos/57417292@N03/6335164067/ Copy and paste it

    • 3 years ago
  3. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    1. at x=3 and x=8

    • 3 years ago
  4. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    2. x=2 and x=5

    • 3 years ago
  5. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    for 3 and 4 you are correct

    • 3 years ago
  6. moneybird Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    I tried, but it says at least one of the answers is not correct.

    • 3 years ago
  7. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    hmm....

    • 3 years ago
  8. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    perhaps the local maximum is only at x=3 because (0,8) implies 8 is not included in the interval (it would be if it were written [0,8]) do you have a limited number of chances to try?

    • 3 years ago
  9. moneybird Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    It's unlimited tries. It's still incorrect.

    • 3 years ago
  10. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm sure 3 and 4 are correct, and that x=3 is a local maximum, so what tricks are we missing?

    • 3 years ago
  11. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    This is giving me a headache. They are pulling some trick with the discontinuities and endpoints. I guess I'll have to get back to you. In the meantime just try whatever you can think of since you have unlimited chances, and let me know if you get it.

    • 3 years ago
  12. moneybird Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    ok I will try my best.

    • 3 years ago
  13. moneybird Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    Thank you for trying :)

    • 3 years ago
  14. Mertsj Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Local Max at (3,4). Local min (2,2). Absolute min (5,0) No Absolute Max

    • 3 years ago
  15. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oh so our only mistake was calling x=5 a local min. I guess I forgot it can't be both absolute and global. thanks for the refresher:)

    • 3 years ago
  16. moneybird Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    still incorrect

    • 3 years ago
  17. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oh, I confused you with mertsj because you have the same picture, so I thought you had figured it out. nevermind...

    • 3 years ago
  18. JamesJ Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    1. For what values of x does the function have a local maximum on (0,8) This is obviously (3,4). If 8 were in the interval--i.e., the interval were (0,8], I'd say there is one at x = 8 as well, but it's not. 2. Local minimum (2,2) and (5,0) 3. absolute maximum. I think it's none. Yes I agree, because the function on the interval never attains a value greater than or equal to 4. absolute minimum. I think it's 5 Yes, because the value y = 0 which is less than or equal to every other value of f(x) on the interval (0,8) is attained at x = 5.

    • 3 years ago
  19. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    1. x=3 2. x=2, x=5 3. none 4. x=5 Those are the answers I gave as well once I noticed that x=8 was not in the interval (you can read above to see that I eventually realized that) and still you can see the the questioner said this was wrong. I guess either he typed it incorrectly, or the internet site he is working on is faulty. I have found that happening all too frequently.

    • 3 years ago
  20. JamesJ Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, I didn't try to figure out exactly who had said what to whom, but I feel very confident with my answer. So either his class is using a non-standard definition, or there's something wrong with the software.

    • 3 years ago
  21. moneybird Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    I figured out 1. 3 2. 2, 5 3. none 4. 0 I just realized that for number 4, it is asking for the y-value

    • 3 years ago
  22. TuringTest Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    bah! how lame, we had it all along!

    • 3 years ago
    • Attachments:

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
  • 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.