Yay math!

Discussion in 'General Discussion' started by Kickback, Apr 13, 2009.

  1. DaggersRage

    DaggersRage Autistic bastard.

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    I've always had problems understanding these particular math problems, and whats worse is that I don't know the name of it. It's the one where you have to know what the next number is in the pattern.

    Like they would have 1, 4, 8, 16, 32, and then you have to figure out what's the number after 32. I think my example may have been a simple one, or an incorrect way of posting, but anyone know what I'm talking about and if so, could they explain it to me?
     
  2. Sokar

    Sokar Well-Known Member

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    are you using a caligraphy pen? I remember seeing that ink pattern back when all the sudden caligraphy pens became cool (I think it was grade 6), and everyone started buying them.
     
  3. Nachtsider

    Nachtsider Banned

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    I think so. This was about four years back, mind you.
     
  4. Kupp

    Kupp Relic of a time before time. TFW2005 Supporter

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    Just reading the first page gave me a headache...
     
  5. Orion_Prime48

    Orion_Prime48 Super Sentai Purist

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    I think I hate this thread
     
  6. Omnibus Prime

    Omnibus Prime I'm too old for this shit TFW2005 Supporter

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    Two trains, 250 miles apart, are traveling toward each other on the same track. Train A is traveling at 90 mph; Train B is traveling at 75 mph. How long until everybody aboard both trains dies a fiery death?
     
  7. Kupp

    Kupp Relic of a time before time. TFW2005 Supporter

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    A: 90.9 minutes.


    Ok, if I may give the class a problem.

    In this sequence of numbers (0, 1, 1, 2, 3, 5, 8, 13, 21,...)

    If you continue this sequence what would be the 20th number in the sequence?
     
    Last edited: Apr 14, 2009
  8. Darkwing48

    Darkwing48 Heroic Decepticon

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    90t + 75t = 250,
    165t = 250
    t = 250/165
    t = 1.51515... hours

    BTW that Metrolink train that collided with the Freight in Chatsworth was supposed to be my train home.
     
  9. Darkwing48

    Darkwing48 Heroic Decepticon

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    prove that
    Sin2(x) + Cos2(x) = tan2(x)
     
  10. CrypticIllusionist

    CrypticIllusionist Well-Known Member

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  11. DaggersRage

    DaggersRage Autistic bastard.

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    How do you figure that out?
     
  12. Kupp

    Kupp Relic of a time before time. TFW2005 Supporter

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  13. CrypticIllusionist

    CrypticIllusionist Well-Known Member

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    I never actually knew what 'Fibonacci' meant before...I just recognized the pattern. :p 

    As for my own contribution: What is the smallest number expressible as the sum of two positive cubes in two different ways?
     
  14. Aernaroth

    Aernaroth <b><font color=blue>I voted for Super_Megatron and Veteran

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    As in two separate sums composed of two different positive cubes each?
     
  15. Kupp

    Kupp Relic of a time before time. TFW2005 Supporter

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    1729 = 1^3 + 12^3 = 9^3 + 10^3
     
  16. Omegatron

    Omegatron Mandatory Fun. Buy it now TFW2005 Supporter

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    This is only true if tan2(x)=1...

    sin = opposite side/ hypotenuse (o/h)
    cos = adjacent / hypotenuse (a/h)
    tan = opposite / adjacent (o/a)

    sin2x+cos2x=tan2x
    (o^2+a^2)/h^2=tan2x
    h^2/h^2=tan2x
    1=tan2x.
     
  17. Jeremy.B

    Jeremy.B Leader Blackout LIVES!!!

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    What the crap are you losers doing? Math? Math is the DEBIL!
     
  18. Omegatron

    Omegatron Mandatory Fun. Buy it now TFW2005 Supporter

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    Excuse me, but math is not the DEBIL. The DEBIL is evil. Women are evil (see proof earlier in thread). The DEBIL is thus a woman, and women suck at math. Thus, math is not the DEBIL. QED.
     
  19. Vexza

    Vexza Nerdicon

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    >.< I'm very good at math, thank you. However, I can't understand most of this because I'm in Algebra-1.
     
  20. Kickback

    Kickback @GeekWithChris Administrator News Staff

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    I went to high school and was in Algebra 2 my Freshman year.
    But got pushed back down to Algegra 1 because I didn't understand WTF my teacher was saying.
    Then, after having my Algebra 1 instructor tell me I'm too advanced for Algebra 1, sent me back to Algebra 2, to the same teacher, who tried to send me back down to Algebra 1.

    In the end, I did "Topics in Geometry", learned more helpful math than dealing with boring imaginary numbers and negative double-fractions, and never touched math again.

    Until college, where my Indian professor drew out 52 cards to show us probability.