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Math symbology question

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  • P PIEBALDconsult

    My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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    Super Lloyd
    wrote on last edited by
    #5

    I am not of the younger folks but I seem to remember that one might represent a 3/2D rotation with a vector adorned with such an arrow. In which the vector axis is the rotation axis and the length / norm is the angle of rotation...

    All in one Menu-Ribbon Bar DirectX for WinRT/C# since 2013! Taking over the world since 1371!

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    • P PIEBALDconsult

      My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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      Pirate Guy
      wrote on last edited by
      #6

      From what I have learned, anti-clockwise moment is indicated with that symbol (along with a '+' or '-' sign). But that's Mechanics (Statics) and I don't recollect anything with that symbol in Algebra.

      I ain't got no signature.

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      • P PIEBALDconsult

        My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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        David Crow
        wrote on last edited by
        #7

        PIEBALDconsult wrote:

        ...and the kid doesn't seem to know.

        Nor the teacher?

        "One man's wage rise is another man's price increase." - Harold Wilson

        "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

        "You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

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        • B Brisingr Aerowing

          Not really[^] Anticlockwise open circle arrow

          What do you get when you cross a joke with a rhetorical question? The metaphorical solid rear-end expulsions have impacted the metaphorical motorized bladed rotating air movement mechanism. Do questions with multiple question marks annoy you???

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          Peter_in_2780
          wrote on last edited by
          #8

          Hmmm. That's in a Unicode block of assorted arrows, not the mathematical operators block(s). The plot thickens... Cheers, Peter

          Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012

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          • D David Crow

            PIEBALDconsult wrote:

            ...and the kid doesn't seem to know.

            Nor the teacher?

            "One man's wage rise is another man's price increase." - Harold Wilson

            "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

            "You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

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            PIEBALDconsult
            wrote on last edited by
            #9

            He (the kid) was out with a fever for two days.

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            • P PIEBALDconsult

              My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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              Jim Meadors
              wrote on last edited by
              #10

              There should be some explanation at the first point in the book where it is introduced. Or, is there some kind of glossary in the back of the book?

              <sig notetoself="think of a better signature"> <first>Jim</first> <last>Meadors</last> </sig>

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              • J Jim Meadors

                There should be some explanation at the first point in the book where it is introduced. Or, is there some kind of glossary in the back of the book?

                <sig notetoself="think of a better signature"> <first>Jim</first> <last>Meadors</last> </sig>

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                PIEBALDconsult
                wrote on last edited by
                #11

                So I would think, but they weren't issued books. :sigh:

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                • P PIEBALDconsult

                  My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                  NeverJustHere
                  wrote on last edited by
                  #12

                  I haven't searched, but you could try looking for it in Latex and seeing if that offers any clues via name/documentation etc.

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                  • N NeverJustHere

                    I haven't searched, but you could try looking for it in Latex and seeing if that offers any clues via name/documentation etc.

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                    PIEBALDconsult
                    wrote on last edited by
                    #13

                    My wife and I both searched. Even Wolfram seemed to just shrug. We wouldn't be surprised to find that it's the wrong symbol. Or some cockamamie new "common core" X| thing.

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                    • D David Crow

                      PIEBALDconsult wrote:

                      ...and the kid doesn't seem to know.

                      Nor the teacher?

                      "One man's wage rise is another man's price increase." - Harold Wilson

                      "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

                      "You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

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                      S Offline
                      Slacker007
                      wrote on last edited by
                      #14

                      DavidCrow wrote:

                      Nor the teacher?

                      I thought the same thing. Why not go to the teacher first. :doh:

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                      • P PIEBALDconsult

                        So I would think, but they weren't issued books. :sigh:

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                        Jim Meadors
                        wrote on last edited by
                        #15

                        Crazy. That's probably why QA has so many requests to do homework. :confused:

                        <sig notetoself="think of a better signature"> <first>Jim</first> <last>Meadors</last> </sig>

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                        • P PIEBALDconsult

                          My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                          Kenneth Haugland
                          wrote on last edited by
                          #16

                          Sure it's not a printing error? A multiplication sign that is messed up? That would make the most sense to me at least.

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                          • P PIEBALDconsult

                            My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                            Jacquers
                            wrote on last edited by
                            #17

                            Repeat until successful? Here's a list of symbols, but I don't see that one... List of mathematical symbols - Wikipedia, the free encyclopedia[^]

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                            • P PIEBALDconsult

                              My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                              _Asif_
                              wrote on last edited by
                              #18

                              Have not found it anywhere though have tried even image search, definitely not standard math symbol. Its either printing error or an individual attempt to map a shaky concept into self created image.

                              Do      Read();      Research();      Experiment(); UnTil You Inspire!

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                              • P PIEBALDconsult

                                My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                                V 0
                                wrote on last edited by
                                #19

                                Never seen it either, but it might be an indication of an iteration of some kind? ask teacher :)

                                V.

                                (MQOTD rules and previous solutions)

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                                • P PIEBALDconsult

                                  My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                                  amagitech
                                  wrote on last edited by
                                  #20

                                  I graduated math but I 've never seen this symbol. Maybe it is Operation defined before question.

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                                  • P PIEBALDconsult

                                    My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                                    Josef Schroettle
                                    wrote on last edited by
                                    #21

                                    The rational exponents can only simplified if the symbol is a division. If you multiply 12/5 * 3/5 you get 36/25 which cannot be simplified. The other way around 12/5 / 3/5 = 4 makes a lot more sense. Same for the other expression.

                                    Josef Schroettle

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                                    • P PIEBALDconsult

                                      My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                                      Rage
                                      wrote on last edited by
                                      #22

                                      This is most likely a Unicode error. I think the "vertically middle dot" was meant to be printed out. Do you have other exercises you could relate to ?

                                      Do not escape reality : improve reality !

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                                      • P PIEBALDconsult

                                        My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                                        Nathan Minier
                                        wrote on last edited by
                                        #23

                                        I think that's the "turn around and ask the smart kid hiding in the back row for the answer" symbol.

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                                        • P PIEBALDconsult

                                          My kid's algebra homework contains a symbol like an anti-clockwise arrow, sort of the opposite of ↻ (if it'll display). It's mixed in with "rational exponents" and my wife and I have never seen them. We have been unable to figure out what it means and the kid doesn't seem to know. Edit: http://www.codeproject.com/script/Membership/Uploads/2587207/Math.png[^] Any of the younger folk know what it means?

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                                          dbrenth
                                          wrote on last edited by
                                          #24

                                          If the symbol is a typo for multiplication #13 become c^3, #14 not so clean x^(21/4) You would have to figure out what the symbol is a substitute for.

                                          Brent

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