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Anybody good at math?

Discussion in 'BlackHat Lounge' started by cfillingi, Dec 14, 2010.

  1. cfillingi

    cfillingi Newbie

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    I'm trying to take the derivative of

    F(x) = (x^2 +4)^2/3

    F(x) = x^2 * e^-0.25x

    Thanks Alot
     
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  2. cameltoe

    cameltoe Registered Member

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    Your sir, need to search for wolframalpha

    And besides, this is simple math.
     
  3. math182

    math182 Regular Member

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    Damn that is fukin chinese
     
  4. JesusBack

    JesusBack Executive VIP Premium Member

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    lol..
    someone was asking me what irony meant the other day.
     
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  5. lengxue888

    lengxue888 Newbie

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    someone was asking me what irony meant the other day
    haha
     
  6. Tbo53

    Tbo53 BANNED BANNED

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    What I wanna know is where in life that becomes relevant..
     
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  7. anic21

    anic21 Junior Member

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    Ans is
    f'(x)= 2/3(x^2+4)^1/3 *(2x)

    2nd one

    f'(x)=x^2 * (-0.25e^0.25x) +2x e^-0.25x

    yeah its simple math..
    Posted via Mobile Device
     
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  8. Strygwyr

    Strygwyr Junior Member

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    Engineering, statistics, software development... to name a few.
     
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  9. azura

    azura Newbie

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    There is no stupid person. Only lazy person.
     
  10. scararm

    scararm Junior Member

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    this will be very easy for my boy$$$$$
     
  11. JesusBack

    JesusBack Executive VIP Premium Member

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    what?
     
  12. GreyWolf

    GreyWolf Executive VIP Jr. VIP

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    That's pretty funny. :)


    It would be like seeing this in a thread sometime.
    gotta love irony
     
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  13. Chronos

    Chronos Junior Member

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    Hey, if you want help, WolframAlpha.com is an awesome computational search engine.

    Learn the syntax and you're good to go!
     
  14. Chronos

    Chronos Junior Member

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    This is true.

    My only problem with institutional math is that they say, "hey figure out 5x^2+6x-10=0." instead of story problems where visual learners can lay out what could physically actually be there, instead of just looking at a bunch of numbers on a piece of paper.

    Don't even get me started with college, by the way. I go and all, but you're going to see big changes in years to come to how teaching institutions work.
     
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  15. mccullum

    mccullum Power Member

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    the answer is 42
     
  16. Monrox

    Monrox Power Member

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    I doubt it. College is supposed to teach you where and how to find answers to complicated problems when and if they arise. It was never supposed to teach practical skills.

    I hated statistics so much but it turned out to be a great tool in IM. Still they couldn't just give assignments like "suppose you have a webpage that gets 1000 hits during the night and 240 during the day. Calculate the odds that a person surfing during the night will be doing so in a dark room and decide where to put bright or dull colored ads to get more clicks."

    That is left for you to figure out but you need to know the theory by heart. That's what makes college useful, at least imao.
     
  17. GreyWolf

    GreyWolf Executive VIP Jr. VIP

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    I agree. By the time your at the college level you shouldn't need the fluff to motivate you to learn.

    If they were to add all that fluff then any questions written in such a way you can see the value for engineers will seem pointless to the statisticians and programmers will think it isn't useful, or a statistics question won't seem useful to the engineers and programmers, etc. Even though the same math is needed for each example.

    Stick straight to the subject and you can get a lot more information in the same amount of time. That's what college is about. The why do I need to know that idea should be left behind in HighSchool. Since college is an option the people that do decide to go should be more motivated and prepared to learn as much as they can as quickly as they can.
     
  18. Chronos

    Chronos Junior Member

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    I agree, but I'm not talking about math exclusively. For instace, in my biz class we learned about the "5s Concept." This concept is an organizational/management/problem solving method based on Frederick Winslow Taylors time in motion study.

    But do I really know what it is? No. It's just a definition in a book that's about as broad it can get. I'm being told to read this so I can get an A on my next exam.

    Education right now is based on A, B, C, D and Fs, which is a good measure of success no doubt, but it seems that schools are more worried about getting all A's all the time, that they've forgot about the learning experience for the students.
     
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