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

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73 Are all limits solvable without L'Hôpital Rule or Series Expansion Sep 18 '14
24 The limit of the alternating series $x - x^2 + x^4 - x^8 + {x^{16}}-\dotsb$ as $x \to 1$ Dec 25 '14
21 Why does the maximum/minimum of linear programming occurs at a vertex? Aug 13 '14
21 Integrate $\int\sqrt\frac{\sin(x-a)}{\sin(x+a)}dx$ Sep 21 '14
19 Some clever trick is required for this Integral with irrational power of cosine as integrand. May 12 '15
16 Lottery odds calculated in your head, or pen and paper. Dec 22 '14
14 How to find $\lim_{x \to 0} ( \frac{1}{\sin(x)}- \frac{1}{\arcsin(x)})$ Sep 6 '14
12 Solve the limit $\lim\limits _{x\to 0}\frac{\sqrt{1-\cos\left(x^2\right)}}{1-\cos\left(x\right)}$ Apr 11 '15
10 How to solve this differential equation: $x^2dy-y^2dx+xy^2(x-y)dy=0$ Oct 1 '14
10 How to prove sum of powers property of roots of unity? Dec 4 '14
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