Comment on A fake Facebook event disguised as a math problem has been one of its top posts for 6 months

• SmartmanApps@programming.dev ⁨16⁩ ⁨hours⁩ ago

  Actually, it is. Written by a PhD and used in a college course.

  Yeah there’s an issue with them having forgotten the basic rules, since they don’t actually teach them (except in a remedial way). Why do you think I keep trying to bring you back to actual Maths textbooks?

  May want to work on your own reading comprehension.

  Nope. It’s still not a textbook. Sounds more like a higher education version of Wikipedia.

  The facts disagree

  With you, yes.

  it doesn’t change the underlying issue that it’s defined by man.

  The notation is, the rules aren’t.

  In the absence of all your books (which you clearly don’t understand anyway based on our discussion of unary vs binary)

  Says person who doesn’t understand the difference between unary and binary. Apparently EVERYTHING is binary according to you (and your website). 😂

  order of operations only exists because we all agree to it

  It exists whether we agree with it or not. Don’t obey it, get wrong answers.

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  • AbidanYre@lemmy.world ⁨14⁩ ⁨hours⁩ ago

    Nope. It’s still not a textbook. Sounds more like a higher education version of Wikipedia.

    It is though. Here’s a link to buy a printed copy: libretexts.org/bookstore/order?math-7309

    You keep mentioning textbooks but haven’t actually shown any that support you. I have. I’ll trust the PhD teaching a university course on the subject over the nobody on the internet who just keeps saying “trust me bro” and then being condescending while also being embarrassingly wrong.

    Says person who doesn’t understand the difference between unary and binary.

    Talking about yourself in the third person is weird. Even your nonsense about a silent “+” is really just leaving off the leading 0 in the equation 0+2. Because addition is a binary operator.

    Apparently EVERYTHING is binary according to you (and your website). 😂

    Only the ones that operate on two inputs. Some examples of unary operators are factorial, absolute value, and trig functions. The laughing face when you make a fool of yourself isn’t really as effective as you think it is.

    I can’t keep trying to explain the same thing to you, so I would say this has been fun, but it’s been more like talking to an unusually obnoxious brick wall. Next time you want to engage with someone try being less of a prick, or at least less wrong.

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    • SmartmanApps@programming.dev ⁨13⁩ ⁨hours⁩ ago

      It is though. Here’s a link to buy a printed copy:

      BWAHAHAHAHAHAHA! They print it out when someone places an order! 😂

      You keep mentioning textbooks but haven’t actually shown any that support you. I have

      No you haven’t. You’ve shown 2 websites, both updated by random people.

      I’ll trust the PhD teaching a university course on the subject

      I already pointed out to you that they DON’T teach order of operations at University. It’s taught in high school. Dude on page you referred to was teaching Set theory, not order of operations.

      over the nobody on the internet

      Don’t know who you’re referring to. I’m a high school Maths teacher, hence the dozens of textbooks on the topic.

      Talking about yourself in the third person is weird

      Proves I’m not weird then doesn’t it.

      Even your nonsense about a silent “+”

      You call what’s in textbooks nonsense? That explains a lot! 😂

      Image

      is really just leaving off the leading 0 in the equation 0+2

      And yet the textbook says nothing of the kind.

      Because addition is a binary operator

      No it isn’t 😂

      Only the ones that operate on two inputs.

      Now you’re getting it. Multiply and divide take 2 inputs, add and subtract take 1.

      Some examples of unary operators are factorial, absolute value, and trig functions.

      Actually none of those are operators. The first 2 are grouping symbols (like brackets, exponents, and vinculums), the last is a function (it was right there in the name). The only unary operators are plus and minus.

      I can’t keep trying to explain the same thing to you

      You very nearly got it that time though! 😂

      at least less wrong

      Again, it’s not me who’s wrong.

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      • AbidanYre@lemmy.world ⁨12⁩ ⁨hours⁩ ago

        They print it out when someone places an order! 😂

        Welcome to the 21st century. We have this thing called the internet so people can share information without killing trees. It’s the resource material for a college course. That’s like the definition of a text book without costing the students a month’s rent.

        random people.

        One is a PhD teaching a college course on the subject, the other is Wolfram. Neither of those are “random people” and I’m willing to bet their credentials beat “claims to be a high school math teacher” pretty soundly.

        I already pointed out to you that they DON’T teach order of operations at University. It’s taught in high school. Dude on page you referred to was teaching Set theory, not order of operations.

        This portion of the discussion wasn’t about order of operations, it was about the number of inputs an operator (+, and - in this case) has. Try to keep up.

        Don’t know who you’re referring to. I’m a high school Maths teacher, hence the dozens of textbooks on the topic.

        Dear God if that’s true I feel sorry for your students and embarrassed for whatever school is paying you. But this is the internet and with any luck that’s a flat out lie. But at least your repeated use of the plural maths means you’re not anywhere near my kids.

        And yet the textbook says nothing of the kind. If I had 2+3, which is really +2+3…

        Oh, I see the problem. We’re back to reading comprehension. That section you highlighted specifically refers to when those symbols are being used as a “sign of the quality” of the number it’s referring to, not when it’s being used to indicate an operation like addition or subtraction. Hopefully that clears it up. This is ignoring the fact that a random screen shot could be anything. For all I know you wrote that yourself.

        do I, according to you, have to write 0+2+0+3

        No. You also don’t need to write +2+3 because the first “+” isn’t an operator. It’s, as your own picture says, a sign of the quality of 2.

        Now you’re getting it. Multiply and divide take 2 inputs, add and subtract take 1.

        I would love to know how you get to a sum or difference with only one input. Here, I’ll try to spell it out using your own example so that even you can understand.

        The inputs to 2 + 3 = 5 are 2 and 3. Let’s count them together. 2 is the first, and 3 is the second. 1, 2. Two inputs for addition. Did you get it this time? Was that too fast? You can go back and read it again if you need to

        Actually none of those are operators. The first 2 are grouping symbols

        Fine, operation then. The fact that you think “!” is the same thing as brackets doesn’t do anything to help your bona fides. And I don’t have the energy to write up a word doc and screen shot it since that’s apparently what it takes for you to consider something valid.

        Maybe you’re just being weirdly pedantic about operator vs operation. Which would be a strange hill to die on since the original topic was operations.

        You very nearly got it that time though! 😂

        If by “it” you mean through your thick skull, then you’re more optimistic than I am.

        Again, it’s not me who’s wrong.

        Again, it is. I could keep providing sources, but I still don’t have the time to screen shot some random crap with no supporting evidence.

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