MathJax Test
Testing $\text{MathJax}$ rendering in FixIt theme.
Inline Formulas
$c = \pm\sqrt{a^2 + b^2}$ and (f(x)=\int_{-\infty}^{\infty} \hat{f}(\xi) e^{2 \pi i \xi x} d \xi)
Formula Blocks
$$ x = {-b \pm \sqrt{b^2-4ac} \over 2a} $$
[ f(a) = \frac{1}{2\pi i} \oint\frac{f(z)}{z-a}dz ]
$$ \cos(\theta+\phi)=\cos(\theta)\cos(\phi)−\sin(\theta)\sin(\phi) $$
[ \int_D ({\nabla\cdot} F)dV=\int_{\partial D} F\cdot ndS ]
$$ \vec{\nabla} \times \vec{F} = \left( \frac{\partial F_z}{\partial y} - \frac{\partial F_y}{\partial z} \right) \mathbf{i} + \left( \frac{\partial F_x}{\partial z} - \frac{\partial F_z}{\partial x} \right) \mathbf{j} + \left( \frac{\partial F_y}{\partial x} - \frac{\partial F_x}{\partial y} \right) \mathbf{k} $$
$$ \sigma = \sqrt{ \frac{1}{N} \sum_{i=1}^N (x_i -\mu)^2} $$
$$ (\nabla_X Y)^k = X^i (\nabla_i Y)^k = X^i \left( \frac{\partial Y^k}{\partial x^i} + \Gamma_{im}^k Y^m \right) $$
Chemical Equations
$$C_p[\ce{H2O(l)}] = \pu{75.3 J // mol K}$$
$$ \ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-} $$
$$C_p[\ce{H2O(l)}] = \pu{75.3 J // mol K}$$
Custom Macros
$\bold{Custom}$ macro $\KaTeX$ in $\text{MathJax}$
$$ \def\RR{{\bf R}} \def\bolda#1{{\bf #1}} \RR = \bolda{R} $$
$$ \newcommand{\water}{{\rm H_{2}O}} \water = \text{H}_2\text{O} $$
$$ \newcommand{\hello}[1][World]{Hello, #1!} \hello \quad \hello[FixIt] $$
$$ \let\oldphi=\phi \let\oldtheta=\theta \renewcommand{\phi}{\varphi} \renewcommand{\theta}{\vartheta} \phi, \oldphi, \theta, \oldtheta $$
Custom Extensions
A physics package example:
$$ \mqty(a & b \ c & d) = \begin{pmatrix} a & b \ c & d \end{pmatrix} $$
An xypic package example:
$$ \begin{xy} \xymatrix { U \ar@/_/[ddr]_y \ar@{.>}[dr]|{\langle x,y \rangle} \ar@/^/[drr]^x \ & X \times_Z Y \ar[d]^q \ar[r]_p & X \ar[d]_f \ & Y \ar[r]^g & Z } \end{xy} $$
$\text{MathJax}$ in headings
|
|
More
Dark Mode Adaptation
Use .auto-dark-mode class to automatically adapt to dark mode by inverting the color and hue:
For inline formula:
$\bbox[border: solid .4pt magenta, pink]{x^2=4}$ {.auto-dark-mode}
For formula blocks: