采采流水

An Essay Concerning Human Understanding

Formula test

2017-09-27


质能公式

\[ E=mc^{2} \]

\[ \frac{\partial u}{\partial t} = h^2 \left( \frac{\partial^2 u}{\partial x^2} + \frac{\partial^2 u}{\partial y^2} + \frac{\partial^2 u}{\partial z^2}\right) \]

Proof

\[ e^{i\sigma_{z}\phi}\sigma_ye^{-i\sigma_z\phi}=e^{2i\sigma_z\phi}\sigma_y \]

插图测试