Arjang
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 Feb21 suggested approved edit on How to show the polynomial $P= x^{10}+ax^9+bx^8+cx^7+x+1$ always has at least one non-real root? Feb21 suggested approved edit on How can I simplify $\frac{\sqrt{x} + 1}{x\sqrt{x} + x + \sqrt{x}} : \frac{1}{x^2-\sqrt{x}}$? Feb21 suggested approved edit on Why $\int_{-1}^1 \frac{1}{x^3}\, \mathrm{d} x \neq 0$? Feb21 suggested approved edit on Show $\sum_{n=1}^{\infty}\frac{\sinh\pi}{\cosh(2n\pi)-\cosh\pi}=\frac1{\text{e}^{\pi}-1}$ and another Feb20 suggested rejected edit on For what values ​​of x the following series converges? Feb20 suggested approved edit on Find all integers such that $\frac{n^3-3}{n^2-7}$ is an integer Feb20 suggested approved edit on Solving $\sum_{x_2 = 0}^{2} \sum_{x_1 = 0 }^{2} c(x_1 + x_2) = 1$ for the constant $c$ Feb20 suggested approved edit on Are the functions $\log(n + 1)$ and $\log(n^2 + 1)$ in $\mathcal{O}(\log n)$? Feb20 suggested approved edit on Are the functions $\log(n + 1)$ and $\log(n^2 + 1)$ in $\mathcal{O}(\log n)$? Feb20 suggested approved edit on How to prove: for some $c>0,x>2 , c,x\in \mathbb R , \, \int_2^x \frac{\mathrm dt}{\log t}-\frac{x}{\log x} \leq \frac{cx}{(\log x)^2}$ Feb20 suggested approved edit on Does $1 + \frac{1}{x} + \sqrt{\frac{2x}{x + 1}},$ have a global minimum? Feb20 suggested approved edit on if $x\le a,x\le f(x)\le a$ and $x_{n+1}=f(x_n)$ then $\lim x_n=a$? Feb20 suggested approved edit on Solving $\frac{1}{a}+\frac{1}{b}=\frac{1}{200}\;$ Feb20 suggested approved edit on What does this notation mean? $\frac{\partial f}{\partial x}(x+y)=\frac{\partial }{\partial x}f(x+y)$ Feb20 suggested approved edit on How to solve $x \log^2x - c=0$? Feb20 suggested approved edit on Upper bound of the sum $\sum_{i=2}^{N}{\frac{1}{\log(i)}}$ Feb19 suggested approved edit on Finding the coefficient of $x^{25}$ in $(1 + x^3 + x^8)^{10}$? Feb19 suggested approved edit on Limit $\lim_{x\to \infty} \left(\frac{f(x+1)}{f(x)}\right)^x$ Feb19 suggested approved edit on Complex Integration : $\int_1^{1+i}\frac{1}{1+z^2}dz$ Feb19 suggested approved edit on What characteristic of the triangle leads the the existence of the orthocenter