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| playground:playground [2015/08/23 16:04] – external edit 127.0.0.1 | playground:playground [2015/08/27 21:35] (current) – mario | ||
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| ====== PlayGround ====== | ====== PlayGround ====== | ||
| + | This is inline math $\int_a^b x^2 dx = \frac{x^3}{3}$. | ||
| + | And this is something else: | ||
| + | \[ | ||
| + | \sum_{i=1}^n i = \binom{n+1}{2}. | ||
| + | \] | ||