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Jun
17
revised What's the smallest number with first digit 1 that triples when this digit is moved to the end?
clarified title: "put in" sounds like maybe it means "appended"
Jun
17
suggested approved edit on What's the smallest number with first digit 1 that triples when this digit is moved to the end?
Jun
1
awarded  Yearling
May
25
comment Identification of a quadrilateral as a trapezoid, rectangle, or square
I would be curious to ask, (1) why and (2) how was she "publicly humiliated" in front of the class? (1) How did she present and argue for her answer? If she did that badly (e.g. arrogantly, confrontationally, or tactlessly), then this would be an important learning opportunity for her. (Not that it excuses the teacher.) I've been in that boat and had to learn the hard way. (2) Do you mean someone intentionally insulted and shamed her, or do you just mean she was embarrassed because people concluded she was wrong? The former is a real problem; the latter, more of a life lesson.
Mar
14
comment Why do 4 circles cover the surface of a sphere?
A "plate" here just means a very short cylinder, right?
Mar
14
comment Surface area of quarter of a Sphere
What did you use to make the diagram?
Jan
7
comment Is arrow notation for vectors “not mathematically mature”?
Maybe not the only question, but I agree that clarity is much more important than projecting a professional image.
Jan
7
comment Is arrow notation for vectors “not mathematically mature”?
While this answer is true, I don't think it's an answer to the question asked.
Dec
8
awarded  Caucus
Nov
25
comment The number of the circles which are tangent to two circles and to a line
Are the two circles allowed to be tangent to the line? (I don't know if that changes the answer.)
Jul
2
awarded  Curious
May
27
comment What is mathematical research like?
@DisplayName, can you explain why the mathematician has hope of finding the cat? As opposed to, say, a physicist, an engineer, or an animal trainer. I'm not seeing it. The mathematician is well-versed in logic and proofs, but this won't help find the cat in the complete absence of empirical data. I think we're straying from the original point, but since I don't understand the original point it's hard to get back there. Maybe the search for the meaning of this quote is like a search for a cat that doesn't exist.
Feb
18
revised What is wrong with this equations?
attempting to improve wording
Feb
18
suggested approved edit on What is wrong with this equations?
Feb
18
comment What is wrong with this equations?
Technically, I think you could argue that the implication could hold if $a$ happened to be equal to $b$, even when $x = 0$. How about this wording... (I'll edit the answer... rollback if you want.)
Feb
18
comment Logic puzzle: Which octopus is telling the truth?
@AviD: by definition, a hint is a statement giving information that could already be inferred from information already given. So, how can any hint not be "irrelevant" in this way? In other words, I don't see how nbubis' statement is less "relevant", or less "additional", than Ross's.
Feb
18
comment Logic puzzle: Which octopus is telling the truth?
This answer might ought to be labeled as a "what-if" scenario, as opposed to "the answer", so as not to confuse the unwary...
Feb
18
comment Logic puzzle: Which octopus is telling the truth?
@AviD: why is nbubis' statement irrelevant? Just because the same information can be inferred by a different path?
Feb
4
comment How many number of buses that the car encounter?
I guess we assume that the car goes from B to A, and the buses go from A to B?
Jan
9
comment Software for drawing geometry diagrams
That link is not very relevant... it's about drawing software in general, not about geometry diagram drawing software.