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  1. #16
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    Quote Originally Posted by arunforce View Post


    not sure what you're trying to ask

    Here, I don't know what to do..


    Can you give me at least 1 example? Our professor didn't teach to us..




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  2. #17
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    E U F = Integers excluding 0

    Here's the logic:

    E contains all even integers( ..., -4, -2, 2, 4 , ...)
    F contains all odd integers(..., -3, -1, 1, 3, ...)

    E U F = (..., -2, -1, 1, 2, ...)

    I exclude 0 because I think it is neither odd or even.

    For the x|x, it means x such as x...

    so x|x is an even integer = x such as x is an even integer
    @Jhem

    also I think number 2 would be all even positive integers.
    Last edited by Gab; 06-28-2015 at 07:37 PM.

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  4. #18
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    Quote Originally Posted by PABLO DICKBAR OPEN TOASTHOLE 4 U View Post
    E U F = Integers excluding 0

    Here's the logic:

    E contains all even integers( ..., -4, -2, 2, 4 , ...)
    F contains all odd integers(..., -3, -1, 1, 3, ...)

    E U F = (..., -2, -1, 1, 2, ...)

    I exclude 0 because I think it is neither odd or even.

    For the x|x, it means x such as x...

    so x|x is an even integer = x such as x is an even integer
    @Jhem

    also I think number 2 would be all even positive integers.
    THank you brother, Now I understand what do I need.




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  5. #19
    𝕡𝕠𝕔𝕜𝕖𝕥𝕤 𝕤𝕠 𝕗𝕒𝕥
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    Quote Originally Posted by PABLO DICKBAR OPEN TOASTHOLE 4 U View Post
    E U F = Integers excluding 0

    Here's the logic:

    E contains all even integers( ..., -4, -2, 2, 4 , ...)
    F contains all odd integers(..., -3, -1, 1, 3, ...)

    E U F = (..., -2, -1, 1, 2, ...)

    I exclude 0 because I think it is neither odd or even.

    For the x|x, it means x such as x...

    so x|x is an even integer = x such as x is an even integer
    @Jhem

    also I think number 2 would be all even positive integers.
    I consider 0 even. I just googled what | means and you're right.

    So basically

    E U F, where E = { 2 }, F = { 3 } => E U F = {2, 3}
    E (Upside Down U) F, where E = { 2 }, F = { 3 } => E (Upside Down U) F = {}



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  6. #20
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    Quote Originally Posted by arunforce View Post


    I consider 0 even. I just googled what | means and you're right.

    So basically

    E U F, where E = { 2 }, F = { 3 } => E U F = {2, 3}
    E (Upside Down U) F, where E = { 2 }, F = { 3 } => E (Upside Down U) F = {}
    You can just consider U and Upside down U as bitwise AND and bitwise OR, but you compare wheter it contains something or not.

    Lets say E = {1,3,7,8} and F = {2, 3, 5}, you can transform them in bit train or w/e you call that in english, and you get
    E = {0,1,0,1,0,0,0,1,1}
    F = {0,0,1,1,0,1,0,0,0}

    where the first bit is 0 because it doesn't contain the number 0, the second one is 1 because it contains 1, the third one is 0 because E doesn't contain 2, etc...

    after that you do {0,1,0,1,0,0,0,1,1} AND {0,0,1,1,0,1,0,0,0},

    which gives you

    {0,0,0,1,0,0,0,0,0}

    Therefore E AND F = {3}

    NOw you can't do that for huuuuge arrays, but thats the logic behind these operators.
    Last edited by Gab; 06-28-2015 at 07:50 PM.

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  8. #21
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    Quote Originally Posted by arunforce View Post
    x|x is referring to two different integers, I believe... so:

    E = {2, 4}
    F = {1, 5}

    E U F = {1,2,4,5}
    Last edited by Sölvi; 06-28-2015 at 07:58 PM.

  9. #22
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    Quote Originally Posted by PABLO DICKBAR OPEN TOASTHOLE 4 U View Post


    You can just consider U and Upside down U as bitwise AND and bitwise OR, but you compare wheter it contains something or not.

    Lets say E = {1,3,7,8} and F = {2, 3, 5}, you can transform them in bit train or w/e you call that in english, and you get
    E = {0,1,0,1,0,0,0,1,1}
    F = {0,0,1,1,0,1,0,0,0}

    where the first bit is 0 because it doesn't contain the number 0, the second one is 1 because it contains 1, the third one is 0 because E doesn't contain 2, etc...

    after that you do {0,1,0,1,0,0,0,1,1} AND {0,0,1,1,0,1,0,0,0},

    which gives you

    {0,0,0,1,0,0,0,0,0}

    Therefore E AND F = {3}

    NOw you can't do that for huuuuge arrays, but thats the logic behind these operators.
    thanks gab never took a programming course b4

    Quote Originally Posted by Sölvi View Post
    I won't RKO u if u thank this post https://www.mpgh.net/forum/showthread...1#post10663234


    - - - Updated - - -

    also the 0 even thing was for u, the rest was for him



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  10. #23
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    Quote Originally Posted by arunforce View Post


    thanks gab never took a programming course b4



    I won't RKO u if u thank this post https://www.mpgh.net/forum/showthread...1#post10663234


    - - - Updated - - -

    also the 0 even thing was for u, the rest was for him
    I just wanted to tell you about the bit trains lol, not how to do 0 AND 1

  11. #24
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    What the fuck.
    This is Algebra 1?
    I don't remember learning any of this back in Algebra 1. Lol

  12. #25
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    Quote Originally Posted by PABLO DICKBAR OPEN TOASTHOLE 4 U View Post
    E U F = Integers excluding 0

    Here's the logic:

    E contains all even integers( ..., -4, -2, 2, 4 , ...)
    F contains all odd integers(..., -3, -1, 1, 3, ...)

    E U F = (..., -2, -1, 1, 2, ...)

    I exclude 0 because I think it is neither odd or even.

    For the x|x, it means x such as x...

    so x|x is an even integer = x such as x is an even integer
    @Jhem

    also I think number 2 would be all even positive integers.
    Actually, 0 is an even integer.

  13. #26
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    Quote Originally Posted by Cheenku View Post
    Actually, 0 is an even integer.
    Ya I wasn't sure so I just excluded it

  14. #27
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    mfw this thread


    https://www.youtube.com/watch?v=QvmrROz7Plo




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  15. #28
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    Quote Originally Posted by Dave84311 Jr View Post
    mfw this thread

    Wh.. why??

    Thank you again. @pablo DICKBAR OPEN TOASTHOLE 4 U and @arunforce




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  16. #29
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    It's helps to think of the ∪ (union) and ∩ (intersection) of sets of numbers in terms of a venn diagram.

    A ∩ B = C (common elements)



    A ∪ B = C (combined elements)



    PatrickJMT does a good explanation about this (should check out his other videos on his website too):

    Last edited by master131; 06-29-2015 at 08:42 AM.
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  18. #30
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    Math makes me cry :,(

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