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A Math Lesson For You All

Discussion in 'Old Threads' started by CakeBaker, Mar 12, 2011.

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  1. CakeBaker

    CakeBaker Sports Enthusiast

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    When you have two constants, or two variables divided by each other in an equation, you can cancel them out and replace them with a simple 1.

    For example

    x/x =1

    k/2k = 1/2

    pi*k/(2k) = pi/2

    Also 0 multiplied by anything is 0.

    1*0 = 0

    100000*0 =

    pi*0/2k = 0


    Just some stuff that seems basic, but I was shocked to learn how some people were unaware these rules ever existed in math.

    That is all
     
    CakeBaker, Mar 12, 2011
    #1
  2. FadetoBlack

    FadetoBlack Veni, vidi, vici, reliqui

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    also, I should point out since we're on the topic that x^2/3 equals the cubed root of (x^2)

    ;o.....
     
    FadetoBlack, Mar 12, 2011
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  3. CakeBaker

    CakeBaker Sports Enthusiast

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    ah, but how to correctly write it in numerous forms, that can be confusing, especially when your focus of attention is to that huge infinite series of Taylor polynomials...

    Also, I doubt spotting derivatives falls under the umbrella of "basic math"
     
    CakeBaker, Mar 12, 2011
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  4. Netherdrake

    Netherdrake New Member

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    AAAAAAARRRRRRGGGHHHH!!!11

    Why did I just read this? :<
     
    Netherdrake, Mar 12, 2011
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  5. CakeBaker

    CakeBaker Sports Enthusiast

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    Because we all like making fun of OscaRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
     
    CakeBaker, Mar 12, 2011
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  6. FadetoBlack

    FadetoBlack Veni, vidi, vici, reliqui

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    who is this oscar?
     
    FadetoBlack, Mar 12, 2011
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  7. Netherdrake

    Netherdrake New Member

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    I think it's a fish.
     
    Netherdrake, Mar 12, 2011
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  8. FadetoBlack

    FadetoBlack Veni, vidi, vici, reliqui

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    I believe you are correct.
     
    FadetoBlack, Mar 12, 2011
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  9. CakeBaker

    CakeBaker Sports Enthusiast

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    A guy who doesn't know that

    5*0=0

    quite a sad story really.
     
    CakeBaker, Mar 12, 2011
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  10. ghost521

    ghost521 Lucent's name is Jeremy

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    just like when I didn't believe 0.999999999~ = 1
     
    ghost521, Mar 12, 2011
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  11. FadetoBlack

    FadetoBlack Veni, vidi, vici, reliqui

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    it doesn't -.- .0.999999999 + 0.000000001 = 1
     
    FadetoBlack, Mar 12, 2011
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  12. CakeBaker

    CakeBaker Sports Enthusiast

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    and .9999999999999*0 = 0
     
    CakeBaker, Mar 12, 2011
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  13. ghost521

    ghost521 Lucent's name is Jeremy

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    Ah, so you fell into a trap just like me. Let's see:

    1/3 = 0.3333333333333333~
    -> 3*1/3 = 0.999999999999999999999~

    But there's also

    3*1/3 = 3/3 = 1

    ----> 0.999999999999~ = 1
     
    ghost521, Mar 12, 2011
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  14. Netherdrake

    Netherdrake New Member

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    [​IMG]

    Yep, guessing I'm correct.
     
    Netherdrake, Mar 12, 2011
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  15. Euphy

    Euphy Well-Known Member

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    Apparently infinity times zero is undefined, though. x_x
     
    Euphy, Mar 12, 2011
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  16. ghost521

    ghost521 Lucent's name is Jeremy

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    I'm tempted to say something, but college math isn't my strong field....yet.
     
    ghost521, Mar 12, 2011
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  17. CakeBaker

    CakeBaker Sports Enthusiast

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    Oh god, no just no. Actually reminds me of that torture I have to go through in math.

    .333333333333333333333333 repeating is not actually EQUAL to 1/3, so thereby, multiplying it by 3, does not make .9999999999999999999 repeating equal to 1
     
    CakeBaker, Mar 12, 2011
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  18. ghost521

    ghost521 Lucent's name is Jeremy

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    That's what my Trig teacher told me tho.
     
    ghost521, Mar 12, 2011
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  19. CakeBaker

    CakeBaker Sports Enthusiast

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    0 times infinite is INDETERMINATE

    NOT undefined. It can equal 0 sometimes, it can equal 2 sometimes, it can equal infinite sometimes. Or well, to be more exact, the LIMIT can equal that.


    GOD EFF YOU, this was not a serious math thread
     
    CakeBaker, Mar 12, 2011
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  20. FadetoBlack

    FadetoBlack Veni, vidi, vici, reliqui

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    one day ryan... one day you'll wake up next to two very angry naked mexicans... and a white tiger.... in the trunk of a car... somewhere in arizona...
     
    FadetoBlack, Mar 12, 2011
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