Danbooru
Login Posts Comments Notes Artists Tags Pools Wiki Forum More »
Listing Upload Hot Changes Help

Search

  • Help
guro
scat
furry -rating:g

Artist

  • ? doushi tatsu to dekkai no 417

Copyright

  • ? kantai collection 534k

Character

  • ? commandant teste (kancolle) 1.0k

General

  • ? 1girl 7.9M
  • ? anchor hair ornament 8.8k
  • ? anger vein 74k
  • ? belt 476k
  • ? beret 138k
  • ? blonde hair 2.0M
  • ? blue hair 1.1M
  • ? blue skirt 242k
  • ? board eraser 829
  • ? box 75k
  • ? buttons 201k
  • ? calculus 92
  • ? chalk 2.2k
  • ? chalkboard 13k
  • ? dated 251k
  • ? double-breasted 37k
  • ? dress 1.8M
  • ? french text 1.9k
  • ? hair ornament 1.9M
  • ? hat 1.6M
  • ? jacket 1.4M
  • ? long hair 5.8M
  • ? looking at viewer 4.6M
  • ? math 1.4k
  • ? multicolored hair 1.1M
  • ? multicolored scarf 1.6k
  • ? one-hour drawing challenge 45k
  • ? pleated skirt 667k
  • ? pom pom (clothes) 67k
  • ? red hair 689k
  • ? scarf 269k
  • ? skirt 2.0M
  • ? solo 6.6M
  • ? streaked hair 389k
  • ? swept bangs 155k
  • ? table 112k
  • ? twitter username 400k
  • ? wavy hair 140k
  • ? white hair 968k

Meta

  • ? commentary request 5.9M
  • ? ↳ partial commentary 130k
  • ? french commentary 724
  • ? highres 7.5M
  • ? mixed-language commentary 75k
  • ? translated 632k

Information

  • ID: 3860127
  • Uploader: MaskedAvenger »
  • Date: about 6 years ago
  • Size: 931 KB .jpg (1600x1200) »
  • Source: x.com/e_jPhi/status/1249334151196463104 »
  • Rating: General
  • Score: 22
  • Favorites: 33
  • Status: Active

Options

  • Resize to window
  • View smaller
  • View original
  • Find similar
  • Download

History

  • Tags
  • Pools
  • Notes
  • Moderation
  • Commentary
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 ›
  • Comments
  • Recommended
  • Loading...

    user 29434
    about 6 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
    • Copy ID
    • Copy Link
    Blindga
    about 6 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 about 6 years ago

    4 Reply
    • Copy ID
    • Copy Link
    Meddy-san
    about 6 years ago
    [hidden]

    Laplace operator in spherical (polar) coordinates.

    1 Reply
    • Copy ID
    • Copy Link
    qwertyuipp
    almost 6 years ago
    [hidden]

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

    1 Reply
    • Copy ID
    • Copy Link
    indexador2
    almost 6 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.

    2 Reply
    • Copy ID
    • Copy Link
    Sportball
    almost 2 years 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.

    0 Reply
    • Copy ID
    • Copy Link
    Kaktus Lata
    almost 2 years ago
    [hidden]

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

    0 Reply
    • Copy ID
    • Copy Link

    Leave a comment

    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:
    Terms / Privacy / Upgrade / Contact /