mathsymbol

Here I will test some math symbols that I just install MathJax plugin based hexo-math package.
I guess it shall be very similar to LaTeX format.

This is an expression $ x + y = 5 $ which $ x = 2 $ and $ y =2 $.

$$ (sin 3 psi)^2 + frac{2}{3} $$

let’s what will be generated! here.

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

This equation $ cos 2theta = cos^2 theta - sin^2 theta = 2 cos^2 theta - 1 $ is inline.