mathematics2x2life
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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 $\theta$: $\cos(2\theta)-2k\sin(\theta)-k-3=0 \quad \text{for } 0 \le \theta \le \pi$