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Joffysloffy

Apparently, this user prefers to keep an air of mystery about them.

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23 What is the closed form for $S=\sum_{n=1}^{\infty} \frac{\sin ({n})}{n!}$? Jul 17 '14
10 How to show that $a^ab^b+a^bb^a\leq 1$ for $a,b\in(0,1)$ with $a+b=1$. [duplicate] Dec 20 '13
8 Find $\lim_{x \to 0}\frac{x-\sin(x)\cos(x)}{\sin(x)-\sin(x)\cos(x)}$ Jan 7 '15
6 If $a\in A$ and $A\in B$, is $a\in B$? Jan 14 '15
6 a possible answer to Russells Paradox? Mar 15 '15
5 Compute $f_*:T_p\mathbb{R}^m\to T_{f(p)}\mathbb{R}^n$. Sep 25 '14
5 Is there an interval notation for complex numbers? Aug 16 '14
4 Scalar Autonomous Differential Equation? Feb 28 '14
4 How many different sets of $6$ different numbers can we construct from $11, 13, 18, 19, 19, 20, 23, 25$? Mar 25 '15
4 Is a set contained in its Cartesian product with itself? Nov 10 '15
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