Top network posts

• 111 Demystify integration of $\int \frac{1}{x} \mathrm dx$
• 25 Diophantine equation $a^2+b^2=c^2+d^2$
• 21 Infinite Series $\sum\limits_{n=1}^\infty\frac{x^{3n}}{(3n-1)!}$
• 15 Prove that a number is even, given the cube is even
• 14 Another quadratic Diophantine equation: How do I proceed?
• 14 Solve trigonometric equation for x
• 11 Prove $n^2+4n+3$ is not prime for $n \in \mathbb{Z}^{+}$.
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