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arthur_affect's profile
Arthur Chu
Arthur Chu
Arthur Chu
Verified account
@arthur_affect

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Arthur ChuVerified account

@arthur_affect

Mad genius, comedian, actor, and freelance voiceover artist broadcasting from the distant shores of Lake Erie (he/him)

Broadview Heights, Ohio
arthur-chu.com
Joined August 2009

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    1. Bazzalisk 🇪🇺 🇮🇪 🇬🇧 🐝‏ @bazzalisk 20 Apr 2020
      Replying to @BootlegGirl

      Essentially the first derivative of a function is how that function changes over the variable (usually time), ie. the “gradient” of the graph. The first derivative of the first derivative is the second derivative, and so on ...

      2 replies 1 retweet 2 likes
    2. Bazzalisk 🇪🇺 🇮🇪 🇬🇧 🐝‏ @bazzalisk 20 Apr 2020
      Replying to @bazzalisk @BootlegGirl

      So for movement (which is what a lot of people are more familiar with) then the function is distance, the first derivative is speed, the second is acceleration, and the third is called jerk (ie. the rate of change of acceleration over time)

      1 reply 1 retweet 0 likes
    3. Dr. Ellie Lockhart. Republic serial villain.‏ @BootlegGirl 20 Apr 2020
      Replying to @bazzalisk

      yeah, I just thought there was a general name for the level of derivative regardless of what it was measuring

      2 replies 1 retweet 0 likes
    4. Bazzalisk 🇪🇺 🇮🇪 🇬🇧 🐝‏ @bazzalisk 20 Apr 2020
      Replying to @BootlegGirl

      Not that I know of, there’s special names for the first, second, third, fourth, and fifth for position, and I assume other functions that come up a lot too.

      2 replies 1 retweet 1 like
    5. Bazzalisk 🇪🇺 🇮🇪 🇬🇧 🐝‏ @bazzalisk 20 Apr 2020
      Replying to @bazzalisk @BootlegGirl

      As a number theorist this stuff didn’t come up much for me :)

      1 reply 1 retweet 1 like
    6. Bazzalisk 🇪🇺 🇮🇪 🇬🇧 🐝‏ @bazzalisk 20 Apr 2020
      Replying to @bazzalisk @BootlegGirl

      Anyway, for Coronavirus you’ve got number of dead, then the first derivative of that is number of deaths per day, then the second is change in number of deaths per day per day, then the third would be change in the change in number of deaths per day per day per day.

      1 reply 1 retweet 1 like
    7. Bazzalisk 🇪🇺 🇮🇪 🇬🇧 🐝‏ @bazzalisk 20 Apr 2020
      Replying to @bazzalisk @BootlegGirl

      So if a value is getting bigger then its derivative is positive, and if its getting smaller then its derivative is negative. Obviously the total number of dead can’t go down so the deaths/day is never going to be negative.

      1 reply 1 retweet 1 like
    8. Dr. Ellie Lockhart. Republic serial villain.‏ @BootlegGirl 20 Apr 2020
      Replying to @bazzalisk

      you challenge fate with this

      1 reply 1 retweet 0 likes
    9. Arquinsiel Teknogrot‏ @Teknogrot 20 Apr 2020
      Replying to @BootlegGirl @bazzalisk

      Finland had a -1 deaths day at one point just before Easter according to worldometer.

      1 reply 1 retweet 1 like
    10. Dr. Ellie Lockhart. Republic serial villain.‏ @BootlegGirl 20 Apr 2020
      Replying to @Teknogrot @bazzalisk

      I mean that does sort of imply it's becoming the actual zombie apocalypse, but only in Finland and only very slowly

      2 replies 1 retweet 0 likes
      Arthur Chu‏Verified account @arthur_affect 20 Apr 2020
      Replying to @BootlegGirl @Teknogrot @bazzalisk

      It's only the actual number of deaths (the "zeroth derivative") that can't go down, the first derivative (the number of people who die every day) obviously can

      1:40 AM - 20 Apr 2020
      • 1 Retweet
      • 2 Likes
      • Dr. Ellie Lockhart. Republic serial villain.
      2 replies 1 retweet 2 likes
        1. New conversation
        2. Dr. Ellie Lockhart. Republic serial villain.‏ @BootlegGirl 20 Apr 2020
          Replying to @arthur_affect @Teknogrot @bazzalisk

          It just can't do below zero itself, sans zombies

          1 reply 1 retweet 0 likes
        3. Arthur Chu‏Verified account @arthur_affect 20 Apr 2020
          Replying to @BootlegGirl @Teknogrot @bazzalisk

          Ah yeah I was confused briefly, it's true it can't be a negative number

          0 replies 1 retweet 1 like
        4. End of conversation
        1. Arquinsiel Teknogrot‏ @Teknogrot 20 Apr 2020
          Replying to @arthur_affect @BootlegGirl @bazzalisk

          The "new deaths" column was -1. Presumably a mistake were made.

          0 replies 1 retweet 2 likes
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