hate these ads?, log in or register to hide them
Page 1 of 2 12 LastLast
Results 1 to 20 of 25

Thread: Emergency Math Question

  1. #1
    OrangeAfroMan's Avatar
    Join Date
    July 20, 2011
    Posts
    7,075

    Emergency Math Question

    So I have an exam in a couple hours and this is on the review. This was never covered in class or through the homework (it was optional, I tried to figure it out then but couldn't).



    Anyone know how to do this? From reading the book as far as I can tell it should be:

    (p*f'(p))/f(p)

    which would be

    (25*-2*(25))/(2500-(25)^2) = -0.666666667

    But that is apparently wrong. I also don't know how to do the last part of the problem.

    Any help?
    Actually an '06.

    EVE: OrangeAfroMan
    Dust514: Andrelommech
    WoT: NorthernNomad
    MWO: Loren Ward

    www.twitch.tv/oameve

  2. #2
    Donor Aea's Avatar
    Join Date
    April 13, 2011
    Location
    Colorado
    Posts
    13,734
    Are you sure it's not 7%?

  3. #3
    W0lf Crendraven's Avatar
    Join Date
    January 26, 2012
    Location
    The United
    Posts
    8,970
    6
    Quote Originally Posted by QuackBot View Post
    I see you have read nietzsche's little known work "beyond boobs and butts".

  4. #4
    Lana Torrin's Avatar
    Join Date
    April 13, 2011
    Location
    Bonding around
    Posts
    17,875
    7 mate.
    Quote Originally Posted by lubica
    And her name was Limul Azgoden, a lowly peasant girl.

  5. #5
    OrangeAfroMan's Avatar
    Join Date
    July 20, 2011
    Posts
    7,075
    How do you get 7?

    EDIT: Also, 7 is not correct.
    Actually an '06.

    EVE: OrangeAfroMan
    Dust514: Andrelommech
    WoT: NorthernNomad
    MWO: Loren Ward

    www.twitch.tv/oameve

  6. #6
    Lana Torrin's Avatar
    Join Date
    April 13, 2011
    Location
    Bonding around
    Posts
    17,875
    Quote Originally Posted by OrangeAfroMan View Post
    How do you get 7?

    EDIT: Also, 7 is not correct.
    How would you know, you admitted you have no idea how to do it and now 2 people have said 7. OK 1 person snap said 6 but fhc gona fhc.
    Quote Originally Posted by lubica
    And her name was Limul Azgoden, a lowly peasant girl.

  7. #7
    OrangeAfroMan's Avatar
    Join Date
    July 20, 2011
    Posts
    7,075
    Well I figured it out, the equation is actually -(p*f'(p))/f(p).

    Answer is 2/3.
    Last edited by OrangeAfroMan; February 15 2017 at 11:35:27 PM.
    Actually an '06.

    EVE: OrangeAfroMan
    Dust514: Andrelommech
    WoT: NorthernNomad
    MWO: Loren Ward

    www.twitch.tv/oameve

  8. #8
    Donor Aea's Avatar
    Join Date
    April 13, 2011
    Location
    Colorado
    Posts
    13,734
    Code:
    >>> f = lambda x: 2500 - x**2
    
    >>> d1 = f(25.0)
    >>> d1
    1875.0
    
    >>> d2 = f(25.0*1.1)
    >>> d2
    1743.7499999999998
    
    >>> 1-(d2/d1)
    0.07000000000000017
    
    # Sanity Check
    >>> d1*(1-0.07)
    1743.7499999999998
    I calculated it and I did a sanity check, I'm pretty confident it's 7% unless something is fucky with the grader (which based off my time in uni is almost guaranteed).

    Are you just entering 7 or 0.07?

    Quote Originally Posted by OrangeAfroMan View Post
    Well I figured it out, the equation is actually -(p*f'(p))/f(p).

    Answer is 2/3.
    Magic Maths? I'm not even sure where that's coming from, assuming missing domain knowledge.

  9. #9
    FatFreddy's Avatar
    Join Date
    April 10, 2011
    Posts
    14,076
    mate

    https://www.mathway.com/

    (change category top left)

    hope this helps
    Quote Originally Posted by QuackBot
    Pastry.. That the best you can do?
    Quote Originally Posted by NotXenosis View Post

    M8, i have discussions that spam multiple accounts, you aren't even on my level

  10. #10
    thebomby's Avatar
    Join Date
    April 9, 2011
    Location
    Switzerland
    Posts
    6,459
    Будь смиренным, будь кротким, не заботься о тленном
    Власти, данной Богом, сынок, будь навеки верным...
    Я люблю Росcию, я - патриот

  11. #11
    Donor Tellenta's Avatar
    Join Date
    April 9, 2011
    Posts
    16,126
    1.875 or 1875 I dunno it's been a while but you have demand at a price not much more...
    Last edited by Tellenta; February 16 2017 at 06:46:20 AM.

  12. #12
    Smuggo
    Guest
    It's maths not math.

  13. #13
    Donor Aea's Avatar
    Join Date
    April 13, 2011
    Location
    Colorado
    Posts
    13,734
    Quote Originally Posted by Smuggo View Post
    It's maths not math.
    Math got us to the moon.

  14. #14
    Smuggo
    Guest
    Quote Originally Posted by Aea View Post
    Quote Originally Posted by Smuggo View Post
    It's maths not math.
    Math got us to the moon.
    Fake news

  15. #15

    Join Date
    April 9, 2012
    Location
    Pit of depravity
    Posts
    6,438
    Quote Originally Posted by Aea View Post
    Quote Originally Posted by Smuggo View Post
    It's maths not math.
    Math got us to the moon.
    I think in large part mathematik got you to the moon....

  16. #16
    Movember 2012 Stoffl's Avatar
    Join Date
    April 10, 2011
    Location
    The original viennese waffle
    Posts
    20,635
    42
    2/10/17 Greatposthellpurge never forget

  17. #17
    Donor Tellenta's Avatar
    Join Date
    April 9, 2011
    Posts
    16,126
    1875
    elastic
    7%

    my final answer

    edit or -7% if it's picky like that.
    Last edited by Tellenta; February 16 2017 at 07:13:16 AM.

  18. #18
    Donor Tellenta's Avatar
    Join Date
    April 9, 2011
    Posts
    16,126
    Quote Originally Posted by OrangeAfroMan View Post
    Well I figured it out, the equation is actually -(p*f'(p))/f(p).

    Answer is 2/3.
    errrr... fuck I get it...

  19. #19
    Lana Torrin's Avatar
    Join Date
    April 13, 2011
    Location
    Bonding around
    Posts
    17,875
    Did we fix it for you? I knew replacing the ram was a good start.
    Quote Originally Posted by lubica
    And her name was Limul Azgoden, a lowly peasant girl.

  20. #20
    Movember '12 Best Facial Hair Movember 2012Donor Lallante's Avatar
    Join Date
    April 13, 2011
    Posts
    17,221
    Trampoline

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •