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1d
revised mixed limit of ·$ x^{-y} $ whenever x tends to $ \infty $ and $y \to 0^{+} $
Removed unrelated tag
1d
revised Justify with reason abot correct option
Removed unrelated tags
1d
revised How to define percentage values in terms of scalar values
Removed unrelated tag
Jan
24
comment length plus width equals price, factoring?
You are using the same faktor $F$ in both cases. If $F$ is a constant then $P$ will be proportional to the perimeter of the rectangle.
Jan
24
comment Algebra on a Louvre tablet
Geometric algebra would have been a correct tag (but not the tag geometric algebras, which dels with Clifford algebras!). The equation (2) above is essentially Euclid II.8.
Jan
19
answered Value of $\pi$ by Aryabhata
Jan
13
answered geometry developments during the Islamic Golden Age (7-13 century)
Dec
21
awarded  Constituent
Dec
9
awarded  Caucus
Dec
5
comment Does anyone know about Ramanujan's method of solving the quartic?
The MacTutor History of Mathematics says that "Ramanujan was shown how to solve cubic equations in 1902 and he went on to find his own method to solve the quartic."
Nov
20
comment Show these sets are homeomorphic to eachother
The notation $x\in \Bbb R^2\setminus \{0\}$ implies that $x=(x_1,x_2)$. Hence $x$ in jflipp's comments is really the same as $(x,y)$ in the question.
Nov
15
comment Why isn't Mary a victim of the permutation?
You are really dividing by $1!4!4!$, since there are three groups of people to consider; Mary, female non-Marys, and male students.
Nov
5
answered Origin of the term `quermassintegral'.
Oct
2
comment Mathematical breakthroughs
@AnalysisIncarnate I don't see any objective way to determine what is a breakthrough, and what is of less importance. Even if you say that only the creation of a new field of mathematics qualifies, most fields people work in today did not exist two centuries ago.
Oct
1
comment Mathematical breakthroughs
This question is really too broad. A complete answer will include all major developments in all branches of mathematics during the last two centuries.
Oct
1
comment Geometry and land
@ErelSegalHalevi The geometric problem would be to estimate the area of an irregularly shaped figure. Egyptian surveyors were called harpedonaptai, or rope stretchers, and presumably no angle measurements would be involved.
Sep
30
awarded  Explainer
Sep
29
answered Geometry and land
Sep
17
answered Is the Riemann sphere homeomorphic to $\overline{\mathbb{R}}\times\overline{\mathbb{R}}$?
Sep
8
comment Determinant - derivation of the general formula and its history
Note that there are several (equivalent) methods of defining and computing the determinant of a matrix. See this post, this post, and this post for some answers to your questions.