Also, “identical” has a different meaning here.

There’s a special place in hell for the monster who dreamed up this captcha!

  • marcos@lemmy.world
    link
    fedilink
    English
    arrow-up
    11
    ·
    14 days ago

    It’s quite easy after you learn engineering-level math. It would still require some paper and patience, but it’s not hard.

    Only something around 5% of the people go there, but it’s a matter of going there, not being a genius.

    • BlueÆther@no.lastname.nz
      link
      fedilink
      English
      arrow-up
      4
      ·
      14 days ago

      It’s been nearly 35 years since I did uni level calc and I’ve not really used in the the years since - fucked if I could figure it out without a lot of <insert search engine of choice> foo these days

      • themusicman@lemmy.world
        link
        fedilink
        English
        arrow-up
        3
        ·
        14 days ago

        To answer your question without being a dickhead: The given x indicates the point on the curve you need to find the slope at. In other words, find the derivative and then evaluate that function at the given x.

      • Possibly linux@lemmy.zip
        link
        fedilink
        English
        arrow-up
        1
        arrow-down
        8
        ·
        edit-2
        14 days ago

        It is a partial derivative. Apparently you haven’t taken Calc III. I figured that would be basic math for most people. It is a shock to me that a person studying to be a nurse doesn’t need a degree in math.

        Never mind. I misunderstood your question. Also I was joking about the calc III is basic part

    • excral@feddit.org
      link
      fedilink
      English
      arrow-up
      1
      ·
      14 days ago

      That requires neither engineering-level math nor paper nor patience. All you need is the chain rule and some basic knowledge of sine and cosine:

      The derivative of cos is -sin, but because of the 6x you get an extra factor 6. The sine function is periodic on 2pi, so sin(6*2pi + pi/2) = sin(pi/2) = 1. So the result is -36