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Can you pick the common mathematics symbols by their given meanings?
Click the matching answer button below
Correctly selected answers will show up in green
Warning: there are decoys!
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Gradient or Nabla
Partial derivative or Boundary
Is an element of
Is proportional to
Ceiling or Roof
Logical equivalence or If and only if
Almost/Approximately equal to
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Common Math Symbols Quiz
Created Mar 2, 2010 in
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First Number (A-Z)
Mar 4th, 2010 at 01:43 GMT
∅ - for me this is diameter. engineers :tut:.
Apr 5th, 2010 at 15:24 GMT
"Approximate" or "approximation" should be accepted for almost equal to.
Apr 5th, 2010 at 16:49 GMT
Approximate is accepted.
May 15th, 2010 at 07:04 GMT
I kept trying "is a member of" for "is an element of" which I think is a legitimate alternate.
May 15th, 2010 at 14:52 GMT
"is an element" has always been accepted so I'm not sure what the issue is there. I will add "is a member of".
May 15th, 2010 at 21:48 GMT
Great idea for a quiz, but you need to add more alternative phrasings. For the last one, I tried "approximates," "is approximately equal to," "approximately equals," and so on.
May 15th, 2010 at 22:46 GMT
@burghatty Thanks, I accept those now. I actually accept lots of alternates for these, but I can't promise the set is complete yet for each symbol.
May 17th, 2010 at 18:48 GMT
How about "Del" for the nabla/gradient? That's generally how we read it in physics.
May 19th, 2010 at 03:14 GMT
Are you Professor Puckett?
Jun 1st, 2010 at 23:49 GMT
gahhh... how did I forget my discrete math so quickly? Excellent quiz!
Jun 19th, 2010 at 19:13 GMT
The partial symbol also means boundary when dealing with topological spaces.
Jul 22nd, 2010 at 23:44 GMT
I began to play and only later I noticed that symbols 2 to 7 and 9 of the first column, and 2 and 6 of the second column don't appear (I see only square boxes). Did anyone else have the same problem?
Oct 25th, 2010 at 19:14 GMT
In the Uk we call your 'ceiling' the 'roof'...
Nov 19th, 2010 at 12:06 GMT
Asymptotic to is not the same as approximately equal to, and has a different symbol: a single wiggle: A ~ b/c as x->inf.
Apr 13th, 2011 at 16:54 GMT
add "element" as an acceptable answer please
Apr 13th, 2011 at 21:12 GMT
Should also take "belongs to" or "in". Maybe also consider allowing the LaTeX shortcuts? (like infty instead of infinity)
Apr 16th, 2011 at 00:57 GMT
for the "there exists" symbol (backwards E) i put "exists" and it was not accepted. i don't understand.
Apr 16th, 2011 at 01:59 GMT
My only criticism is to accept more for the "Almost Equal to" symbol. I tried a lot of different variations before time ran out.
Apr 27th, 2011 at 01:37 GMT
Damn. Got all but the fish.
May 5th, 2011 at 13:00 GMT
logical equivalence - I think we used to say 'implies and is implied by' or is that different?
May 8th, 2011 at 15:13 GMT
@ArnoldLodgehm Different. Logical equivalence goes both ways - it's the same as "if and only if". Implies only goes one way.
May 10th, 2011 at 10:50 GMT
@puckett86 Thank you for clarifying that for me. A long time since I used it.
May 30th, 2011 at 21:28 GMT
No, I think ArnoldLodgehm is correct-- he didn't say "implies," he's saying "implies and is implied by," which does in fact go both ways (in fact, it's just a synonym for "if and only if.") Also, you should accept "strictly contains" and/or "strict containment" for #5 on the left column.
Jun 22nd, 2011 at 20:10 GMT
I got "is an element of" just for typing the "in" of "intersection." I think "in" is a little too vague to count for "is an element of."
Nov 3rd, 2011 at 22:08 GMT
Ceiling and Roof should accept the longer versions "greatest integer less than" and "least integer greater than". Yes, I typed out those rather than ceiling/floor first >.>
Nov 16th, 2011 at 22:12 GMT
Shouldn't "slope" be accepted for gradient?
Dec 4th, 2011 at 04:45 GMT
There are LOTS of ways to say "almost equal to!" I tried things like "about" "about equal" "almost equals" - so many more need to be accepted.
Dec 7th, 2012 at 00:41 GMT
As of today, the quiz is now clickable. Hopefully this eliminates the earlier problems with the quiz.
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