This is a test post to check that math formulae render correctly.

Here is an inline formula: $E = mc^2$

Here is the quadratic formula:

\[x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\]

And here is Euler’s identity, often called the most beautiful equation in mathematics:

\[e^{i\pi} + 1 = 0\]