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Apr
23
comment Does sum of all natural numbers contradict another rule?
@DavidBandel It is hardly snobbery to ask someone to do a layman explanation without introducing fundamental misconceptions. Their post obviously confused the OP and they are a mathematician. So what does that say what it would do to the layman? While they have many fine and interesting mathematics videos, this is not one of them. Furthermore, there is no need for ad hominem attacks on this site.
Apr
21
revised Is the Science and Knowledge Publishing Corporation a spam journal publisher?
added 519 characters in body
Apr
21
answered Is the Science and Knowledge Publishing Corporation a spam journal publisher?
Apr
20
answered Prove or disprove that the ring $\mathbb{Z}[x]/(x^2-1)$ is an integral domain
Apr
20
answered Transforming integral in cylindrical coordinates into cartesian.
Feb
25
comment Limit of $\sinh z$ as $z\to i$.
@StellaBiderman It depends on what they are assumed to know in the course. I do not know what the OP does/does not know. In my introductory Complex Analysis text, this equality was introduced within 3 lines of the definition of complex sinh.
Feb
25
answered Limit of $\sinh z$ as $z\to i$.
Feb
17
comment French Math Book PDF that is easy to translate
@GeorgesElencwajg The links I gave are just that. I only recommend Grothendiecks book not on the basis that the material is undergraduate, but in that despite not being able to follow the Math, if one wants to claim mathematical French reading proficiency, one should be able to read through the book with a general understanding of what is being said - again, not necessarily the Mathematics. It is also an easily accesible large amount of French mathematics available in 'most' Universities mathematics library.
Feb
16
answered French Math Book PDF that is easy to translate
Feb
16
answered Local max, min and point of inflection of $y= ax^3 + 3bx^2 + 3cx - d$
Jan
10
revised Idempotent $17\times 17$ Matrix Jordan Normal Form
added 21 characters in body; edited title
Jan
6
comment Does sequence always give a square
@Daga The OP asked for a positive integer sequence.
Jan
6
revised Which series converges the most slowly?
Correcting grammar and converting to MathJax.
Oct
31
awarded  Nice Answer
Oct
25
revised Find the volume of the solid V given by $x^2 + y^2 \leq z \leq 1$ and $x \geq 0$.
added 40 characters in body; edited title
Oct
25
revised Finding which components of a function have the largest effect?
added 22 characters in body
Oct
25
comment Given integer roots of $x^2+mx-n=0$ and $x^2-mx+n=0$. Show $6 \mid n$.
I have edited the question to make it more readable and give it a more manageable title. I would check to be sure this is what you intended.
Oct
25
revised Given integer roots of $x^2+mx-n=0$ and $x^2-mx+n=0$. Show $6 \mid n$.
added 215 characters in body; edited title
Oct
25
answered If $(G, ∗, I)$ is a group and $a, b ∈ G.$ Show that $a^3 = I$ if and only if $(b^{−1} ∗ a ∗ b)^3 = I$.
Oct
11
reviewed Approve Solve for $\theta$: $\cos(2\theta)-2k\sin(\theta)-k-3=0 \quad \text{for } 0 \le \theta \le \pi$