Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

onegirl

  • one year ago

Match the graphs of the functions on the left with the graphs of their derivatives on the right.

  • This Question is Closed
  1. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  2. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  3. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  4. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Do you know what the derivative of a 2nd degree function is?

  5. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    no

  6. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    You know the following I guess: If f is decreasing, then f' is negative (and vice versa). If f is increasing, then f' is positive ( and vv).

  7. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  8. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    No look at the first graph on the left. To the left of the y-axis, it is decreasing, to the right it is increasing.

  9. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes it does

  10. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    This means, for f' you are looking for a function that is negative on the left side of the y-axis and positive on the right.

  11. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok

  12. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so it will be #2 in the second attachment?

  13. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I can see it on one of your drawings on the right! Do you?

  14. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes it will be number 2 ?

  15. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so to will have letter A

  16. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    No, I've got C

  17. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    but you can't match a with c , it says to match the left with the right so it has to be a letter with a number

  18. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I mean this (see image) The parabola on the left (2nd degree function) has the straight line on the right as it's derivative.

    1 Attachment
  19. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so number one will be 1 with letter c?

  20. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I meant number 2 sorry

  21. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 2C ?

  22. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes

  23. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

  24. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Now try #2. See what it does: increasing, decreasing, increasing. So you're looking for a graph that is +, then -, then +.

  25. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i thought we already did number 2

  26. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ?

  27. zepdrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    He was telling you number #1 is C. There musta been some confusion there c:

  28. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohhh okay lol sorry

  29. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so number 2 will be f?

  30. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    @zepdrix: thx

  31. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes!

  32. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay :)

  33. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I think you got it!

  34. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    number 3 looks funny

  35. zepdrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think #2 is `e` actually :o hmm

  36. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    It is down, up, down, up, so look for -,+,-,+

  37. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay so number 3 will be A ?

  38. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    @zepdrix : you're right, I'm having trouble looking at three different pictures, @onegirl: sorry ;)

  39. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay thanks for the correction zep

  40. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 3A ?

  41. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes, 3A

  42. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

  43. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so number 4 will be D?

  44. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Right again! Always decreasing, so looking for a derivative that is always negative...

  45. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay

  46. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so i'm guessing number 5 will be 5B?

  47. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ?

  48. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    You guessed wrong... Look at graph #5 and compare with #3

  49. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    It behaves in the same way: dec, inc, dec, inc, so -,+,-,+

  50. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so it will be 5f

  51. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Oops, look something went wrong with my last response. Because 5 and 3 behave in the same way, you have to choose the same derivative: 5A

  52. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh ok

  53. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so letter A goes to two graphs? okay

  54. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    That's the mean part of the question ;)

  55. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay so how about the last one number 6?

  56. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    It goes down, then up, then down, so for f' we have: neg, pos, neg

  57. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so it will be 6B

  58. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    No, that goes a lot more from - to + etc.

  59. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    (it is really simple)

  60. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohh so it will f since it does go negative pos then neg

  61. ZeHanz
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes, it's 6F. I must admit this kind of question can be confusing, because you constantly have to switch from increasing , decreasing to +, -.

  62. onegirl
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay well thanks for your help

  63. 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.