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playground:playground [2008-11-11 15:55] – 81.188.78.24 | playground:playground [2014-05-09 09:24] – external edit 127.0.0.1 | ||
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- | let's see first " | + | ====== PlayGround ====== |
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- | < | ||
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- | < | ||
- | \frac{3}{4 \pi} | ||
- | \lim_{n \to \infty} | ||
- | \sum_{k=1}^n \frac{1}{k^2} = \frac{\pi^2}{6} | ||
- | e^{i \pi} + 1 = 0 \\ | ||
- | </ | ||
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- | < | ||
- | $ \begin{align*} | ||
- | \int x^2 dx & = \frac{1}{3}x^3 | ||
- | \therefore\quad\int_0^1 x^2 dx &= \frac{1}{3} | ||
- | \end{align*} | ||
- | $ </ |