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--- playground:playground [2013/10/22 14:45]
marcin removed
+++ playground:playground [2021/09/23 08:51] (current)
@@ Line 1: / Line 1: @@
 ====== PlayGround ======
+===== Test pluginu MathJax =====
+Inline: $a^2 + b^2 = c^2$
+Escaped parentheses: \(1+2+\dots+n=\frac{n(n+1)}{2}\)
+Block:
+$$ \frac{d}{dx}\left( \int_{0}^{x} f(u)\,du\right)=f(x) $$
+Escaped square brackets:
+\[ \sin A \cos B = \frac{1}{2}\left[ \sin(A-B)+\sin(A+B) \right] \]
+Environment:
+\begin{align*}
+e^x & = 1 + x + \frac{x^2}{2} + \frac{x^3}{6} + \cdots \\
+    & = \sum_{n\geq 0} \frac{x^n}{n!}
+\end{align*}
+==== Numeracja i referencje ====
+In equation \eqref{eq:sample}, we find the value of an
+interesting integral:
+\begin{equation}
+  \int_0^\infty \frac{x^3}{e^x-1}\,dx = \frac{\pi^4}{15}
+  \label{eq:sample}
+\end{equation}