Comment on "Quick" security check... I had to do 15 of these...

possiblylinux127@lemmy.zip ⁨2⁩ ⁨months⁩ ago

• Showroom7561@lemmy.ca ⁨2⁩ ⁨months⁩ ago

  “Just to prove you are a member of MENSA…”

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  • marcos@lemmy.world ⁨2⁩ ⁨months⁩ 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.

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    • BlueEther@no.lastname.nz ⁨2⁩ ⁨months⁩ 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

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    • excral@feddit.org ⁨2⁩ ⁨months⁩ 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

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      • Blue_Morpho@lemmy.world ⁨2⁩ ⁨months⁩ ago

        It’s called engineering level math because engineers, physicists, and math majors are required to take Calculus.

        Yes I took calculus in high school but it’s not required. No I don’t remember much of any of it because it was decades ago.

        You also learned all the countries/capitals in Africa when you were in middle school. But I bet you can’t name them now without Google. Same thing.

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      • tetris11@lemmy.ml ⁨2⁩ ⁨months⁩ ago

        • d/dx: 6cos( 6x + Pi/2 )
        • = d/dx: -6sin(6x)
        • = -36 cos(6x)
        • = -36, when x = 2Pi

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    • OozingPositron@feddit.cl ⁨2⁩ ⁨months⁩ ago

      [deleted]

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      • themusicman@lemmy.world ⁨2⁩ ⁨months⁩ 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.

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      • possiblylinux127@lemmy.zip ⁨2⁩ ⁨months⁩ 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.

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• CutekittyAlexa@lemmy.blahaj.zone ⁨2⁩ ⁨months⁩ ago

  You could just write it into an advanced calculator and then copy the answer. Ain’t that bad

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  • ayyy@sh.itjust.works ⁨2⁩ ⁨months⁩ ago

    Or use Photomath or ChatGPT. This wouldn’t work anymore.

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    • Ziglin@lemmy.world ⁨2⁩ ⁨months⁩ ago

      I’d love to see chatgpt try. Also it’s already most likely rendered as an image, which would further complicate things.

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