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  • ? doushi tatsu to dekkai no 353

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  • ? kantai collection 512k

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  • ? commandant teste (kancolle) 997

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Information

  • ID: 3860127
  • Uploader: MaskedAvenger »
  • Date: over 5 years ago
  • Size: 931 KB .jpg (1600x1200) »
  • Source: twitter.com/e_jPhi/status/1249334151196463104 »
  • Rating: General
  • Score: 22
  • Favorites: 33
  • Status: Active

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Resized to 53% of original (view original)
commandant teste (kantai collection) drawn by doushi_tatsu_to_dekkai_no

Artist's commentary

  • Original
  • |
  • Translated
  • ― Couverture de test ―
    みんな寝てしまうのでキレたコマ先生はテスト範囲を難くしてしまいました......。
    (+30min)
    #艦これ版深夜の真剣お絵描き60分一本勝負
    #艦これ版真剣お絵描き60分一本勝負_20200412
    #コマンダン・テスト

    ― Test cover ―
    みんな寝てしまうのでキレたコマ先生はテスト範囲を難くしてしまいました......。
    (+30min)
    #艦これ版深夜の真剣お絵描き60分一本勝負
    #艦これ版真剣お絵描き60分一本勝負_20200412
    #コマンダン・テスト

    • ‹ prev Search: math next ›
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    user 29434
    over 5 years ago
    [hidden]

    Looks like legit math, but I haven't gotten to Christoffel symbols yet, so I get lost after (B). Doesn't help that I can't read French, but I can pick up most of the loanwords. Not sure what's being derived here.

    1 Reply
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    Blindga
    over 5 years ago
    [hidden]

    Laplace transform to polar coordinates. Differential geometry I believe. Pretty hardcore stuff. It's used in engineering science.

    Also, it looks like she's saying "this is on the test" so uh... good luck everyone?

    Updated by Blindga over 5 years ago

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    Meddy-san
    over 5 years ago
    [hidden]

    Laplace operator in spherical (polar) coordinates.

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    qwertyuipp
    about 5 years ago
    [hidden]

    If I understand it
    And I don't
    It is some of the math needed to target over earth curvature

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    indexador2
    about 5 years ago
    [hidden]

    qwertyuipp said:

    If I understand it
    And I don't
    It is some of the math needed to target over earth curvature

    Not really, it's a Laplacian, an operator that can be used to describe many things, like the electric field of an electrical charge, or the flow of water or heat. Not needed for targetting, though, as far as I know.

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    Sportball
    about 1 year ago
    [hidden]

    indexador2 said:

    Not really, it's a Laplacian, an operator that can be used to describe many things, like the electric field of an electrical charge, or the flow of water or heat. Not needed for targetting, though, as far as I know.

    Tbh, I haven’t been in school since I flunked out my first semester of college, but I kinda want to learn this. She could hopefully be a good teacher.

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    Kaktus Lata
    about 1 year ago
    [hidden]

    So, what does this math have to do with a WWII seaplane tender?

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    the explicit forms
    As a result, both are transformed in the same way, we can see that grad(f) is represented by a single derivative ∂_i(f).
    What the test will cover
    Transform the Laplace operator into polar coordinates.
    The Laplace operator is written using the covariant derivative as follows:
    This can also be expressed with "div" and "grad" div = divergence of grad = gradient of
    Here, we transform grad(f) from Cartesian coordinates into curved coordinates.
    Therefore, div(A) takes the following form in curved coordinates:
    Here, expanding the Christoffel symbol
    It can expressed [sic] by the derivative of √g (g is the determinant of g_ij, as the Jacobian squared)
    Lastly, substitute the results from B and C into A and use
    We obtain:
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