[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / s / t / u / v / vg / vm / vmg / vr / vrpg / vst / w / wg] [i / ic] [r9k / s4s / vip] [cm / hm / lgbt / y] [3 / aco / adv / an / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / pw / qst / sci / soc / sp / tg / toy / trv / tv / vp / vt / wsg / wsr / x / xs] [Settings] [Search] [Mobile] [Home]
Board
▼ Settings Mobile Home
4chan
/sci/ - Science & Math

Name
Options
Comment
Options


Gimmicks


PEE text
My Bans
Verification
File

    08/21/20New boards added: /vrpg/, /vmg/, /vst/ and /vm/
    05/04/17New trial board added: /bant/ - International/Random
    10/04/16New board for 4chan Pass users: /vip/ - Very Important Posts
    [Hide] [Show All]




    File: 1667682280108947.jpg (132 KB, 1000x871)
    132 KB JPG
    Why does two negatives make a positive?
    >>
    Let's say there was a fight, someone negates your hit, and you click a button which negates the negation that he made. That's why two negatives make a positive.
    >>
    >>17079652
    so if you steal twice you're basically giving away money for free
    >>
    >>17079616
    because miggers say they do.
    >>
    >>17079676
    Oy vey
    >>
    >>17079616
    If you steal my thing and I steal it back everything is back to where it was
    >>
    >>17079654
    Jensen Huang from Nvidia something similar.
    >>
    >>17079616
    Because if you rotate one of the negatives 90 degrees and and overlap them they become a positive.
    >>
    >>17079688
    Also use the distributive property and you’ll see why.
    >>
    >>17079616
    180+180=360
    >>
    >>17079680
    is voting not secret in zogmerica?
    >>
    -1 - 1 = -2

    1-2 = - 1

    0-1 = - 1

    2-0-2 = 0

    0=0

    1-1=2

    5-10=-5

    = - 7

    8+7-7=8

    -7+8=1

    0=0

    0=2
    >>
    >>17079708
    -180 - 180 = 0.
    >>
    >>17079713
    If everyone “kept their vote secret” and didn’t tell anybody then how do they know who won?
    You have to tell someone who you are voting for, otherwise they have to use psychic extraction which is too expensive.
    >>
    >>17079616

    https://math.stackexchange.com/questions/208447/can-vectors-be-inverted

    because your question implies you ask about 1-dimensional numbers. consider your number model- a value and a direction. for a 1-dimensional number, inversion is simple. problem is, what about a 2-dimensional vector where their dicrection is in perfectly opposite directions, wherever they point, they will be the same as negative/positive on a 1-dimensional axis. this is why the dot product was invented

    https://en.wikipedia.org/wiki/Dot_product

    where it approaches a minimum value, zero if the vector lengths are equal, and maximally negative if they point perfectly opposite, or maximally positive if they point perfectly the same direction, the two vectors used as inputs. computing the 1-dimensional dot product is taught to children as multiplication, same as how reducing all those equations by the order of operations is actually beta reduction

    https://en.wikipedia.org/wiki/Reduction_strategy#Lambda_calculus
    https://en.wikipedia.org/wiki/Lambda_calculus#Reduction

    so, if you calculate the unit length of 2 vectors, and find that their dot product is 1, it means if you multiply them together, the resulting vector direction should be opposite, the same as your two negatives make a positive. it isn't that they are negative, it is just that they are the same.

    the problem arises when 2 positives do not make a negative... unless under some operations. then, you have to figure out the situation when 2 vectors have directions which are not perfectly inversed, like pos/neg, but off at a skewed angle. sort of positive, as a gradient.

    https://en.wikipedia.org/wiki/Gradient

    because here's the rub- you don't actually have to balance equations. graphing the imbalance allows for gradients... but that is only gradating the value, not the direction. gradating the negativity or positivity of a number occurs too.
    >>
    >>17079616
    where I am going with this whole dot product thing

    >>17079875

    is that when you graph the output of the dot product, it creates a gradient where you can measure if 2 vectors are perpendicular or not, but also using the negative value of the output to indicate whether or not they are in the same direction. so when you graph truth table for 1-dimensional arithmetic using value-dicrection pairs, you get

    neg x neg = pos (inverse)
    neg x pos = neg (special left hand)
    pos x neg = neg (special right hand)
    pos x pos = pos (consistent)

    https://en.wikipedia.org/wiki/Left_and_right_(algebra)

    there is a difference between the special results. what ends up happening is that on a simple clickety clack grid system like a number line, coordinate graph, all that stuff, you end up having to account for the fact that positive/negative is only really in reference to some other datum. on your question, "negative" means any vector compared against the datum of zero-to-one value in some very specific direction.

    if you had a 3d scene, you would have to define what the positive direction is, usually implied by the origin point and whatever number of reference vectors you add to make 3d space, 4d space, whatever. this is where you get a situation like the quaternions

    https://en.wikipedia.org/wiki/Quaternion

    where then mathematicians need to figure out why it is that if they multiply quaternions AxB=C is not the same as BxA=D. that is only taking into account the values, not yet the directions/polarities. mathematics has to figure out the overall policy not just for 1d numbers like you ask, what about any N-dimensional number.

    https://en.wikipedia.org/wiki/Hypercomplex_number

    there is a pattern to it all, sort of a lookup table.

    https://en.wikipedia.org/wiki/Cayley%E2%80%93Dickson_construction

    Cayley did one where he made N-dimensional number systems, starting with 1, then 2, then up to 256 or whatever. each one gets more complex and the complexity pattern is predictable.
    >>
    File: dang.png (125 KB, 1433x860)
    125 KB PNG
    >>17079616
    your situation ends up like picrel. if you want to multiply 8-dimensional numbers, at least on a simple pair of value and pos/neg, picrel is your truth table. if you want to do the same on 1d numbers, use the one you were taught in school.

    notice how there is a "negative line" crossing the lookup table in picrel, labeled as negative E zero. notice when you do the left/right multiply thing, another trick up their sleeve they hid from you in school.

    E2xE5=E7
    E2xE5=-E7

    when the "pair" crosses that diagonal negative line, the output of the multiplcation inverts. in that system, pos/neg is a binary selection, not a gradient. you can get how complicated it might be for larger systems, but it is really just calculating the truth table pattern for N-dimension instead of solving math riddles and shit.
    >>
    >>17079882
    >E2xE5=E7
    >E2xE5=-E7
    E5xE2=-E7

    fuckin goofed it. whatever. you get the point. they nerfed the concept about it all in school when they taught it to you.
    >>
    >>17079708
    huh, I never thought of how this all applies to complex numbers
    >>
    >>17079855
    -180 -180 = -360
    >>
    >>17079713
    If you hate christian countries so much, go live in one of those mudslim shitholes.
    >>
    >>17079676
    TDS
    BTC
    bc1qtm4rep7kyp2p28hlkfktpnd0j7uew47vnt2mev
    LTC
    ltc1q9xlaysse0mpfwf025esd69kt9zu3md22gh23du
    ETH
    0x6abA18D203520c8F90ca63eE7426a7bC345D98e6
    SOL
    E5ekoiauCR8yiNp451dmuPzhUxo84P5x3m9WJBK5kxZe
    XRP
    r3jYXNdMk2Vz5hXhKCKE9re8uz93JQFG1r
    DOGE
    DSBq5jRWkiwmEh1G7zBwmQDgRkvRr61fmb
    XMR
    85CTwq5wGjWZw5GgzgwZPrHyZxpLXMK5oZSSSk5j4x9w1bpqzisaWAUZYaAPfh6rP2MZJcaFqF1XmEzkw6YCqJSS2Txu6Z8




    Delete Post: [File Only] Style:
    [Disable Mobile View / Use Desktop Site]

    [Enable Mobile View / Use Mobile Site]

    All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.