Jay Daigle

@ProfJayDaigle

Math professor at Occidental College. I write about interesting math, teaching, and using mathematical ways of thinking in everyday life.

Vrijeme pridruživanja: siječanj 2012.

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  1. proslijedio/la je Tweet

    Beowulf: Abridged Beyond the Point of Usefulness Prologue Say, the Spear-Danes? Super good Danes. And Scyld Scefing? Super awesome orphan. Grabbed goods from others, gave them to friends. A good boy, Beow, was born to him.

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  2. proslijedio/la je Tweet
    29. sij

    every seemingly innocent fragment of information is secretly plotting how to escape its context and cause trouble

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  3. proslijedio/la je Tweet
    22. sij

    Proposal for a new metric: The Moon Unit, or "moo", which is equal to 2.71321035034 seconds, the maximum ping time to the moon. It's a measure for web technologies, like Google Drive, which regularly takes around 4.5moo to list the first 50 files in a directory.

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  4. proslijedio/la je Tweet
    30. sij

    What runs through my head when I receive correspondence from an administrator addressed to Mr. Shtulman.

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  5. proslijedio/la je Tweet
    29. sij

    Kill Sticky makes browsing the web a lot better, especially if you're using a small screen. It's like a graphic painkiller.

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  6. proslijedio/la je Tweet
    28. sij

    A photo is a mathematical representation of your face.

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  7. proslijedio/la je Tweet

    it's really remarkable how many people think that them just reciting their knowledge counts as teaching, and how many people think that being recited to counts as learning

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  8. proslijedio/la je Tweet
    26. sij

    The reason I wrote a whole book about this stuff is that quantitative/deductive thinking is amazing at what it's amazing at.

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  9. 24. sij

    But it's also reasonably polite to let people pass you if the escalator isn't crowded and that's not too hard to do. And also polite not to be an ass if the person in front of you is juggling a bunch of stuff and can't let you through easily.

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  10. 24. sij

    That doesn't mean everyone has to walk. Some people would rather relax and take a bit more time! (I'm personally the opposite; I'd rather walk and get there _slower_ than stand still and get there faster. Walking is fun and standing still is unpleasant.)

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  11. 24. sij

    But if the escalator isn't very crowded, everyone moves faster if they, well, move. (Consider the limiting case; if there's only one person on the escalator, clearly they'll get to the top faster if they walk.)

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  12. 24. sij

    Like all applications of math, this depends on your assumptions. If the escalator is crowded and people are queuing to get on, then they move faster if they stand still. (They move slower once they're on the escalator, but more can fit at once so the queue empties faster.)

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  13. 23. sij

    In the gym today for the first time since classes started. Amazing how much less busy it was last week, during break.

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  14. proslijedio/la je Tweet
    21. sij

    Today in my senior seminar, which is on the Age of Revolutions, we workshopped how to skim-read monographs for secondary research. To practice, they each had ten minutes to dissect one of these books and explain its relevance to the class. It worked great!

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  15. proslijedio/la je Tweet
    16. sij
    Odgovor korisniku/ci
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  16. proslijedio/la je Tweet
    13. sij
    Odgovor korisniku/ci

    What you need to do is skate slower than everyone else so that they are over the speed limit and get banned until only you are left at which point you can skate as fast as you want because whatever you do will be considered the average. 🤔😂

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  17. proslijedio/la je Tweet
    14. sij
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  18. 13. sij

    The skills of setting up a multiple integral, translating that into an iterated integral, and using symmetries and theorems to simplify that iterated integral are all important. But working out a long iterated integral by hand is just grinding. That's what computers are for.

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  19. 13. sij

    When I teach multivariable calculus, I lecture with Mathematica open on a side screen. I'll work though the problem until we get an iterated integral, then plug it into the computer and write the answer on the board.

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  20. 13. sij

    It's important to be able to do basic integrals, so you understand how integrals work. It's important to be able to do complicated integrals correctly, and the correct way to do them is with a computer algebra package.

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