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14 Convexity of $x\left(1+\frac1x\right)^x,\ x\ge 0$ Jan 25 '17
11 Minimize $\min_{f\in E}\left(\int_0^1f(x) dx\right)$ Nov 10 '17
11 The misuse of Dirac's $\delta$ Oct 25 '17
10 permutation search game Mar 5 '13
9 Does convergence of $\frac{1}{N}\sum_{n=1}^{N}a_n$ imply $a_n/n$ converges to zero? Dec 6 '17
8 range of a fractional function Mar 3 '13
8 Example of continuous but not absolutely continuous strictly increasing function Dec 17 '13
8 Compute $\int_{0}^{\infty} \frac{\sqrt{x}\sin(x)}{1+x^2} dx$ Aug 12 '17
7 functional equation $f(x^2)=xf(x)$ Dec 18 '19
6 Prove $\sum_{\text{cyc}}^{}\sqrt[3] {1+2ac} \le 3\sqrt [3] {3}$. Dec 14 '19
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