You can write math in 2 ways: inline and code block. Inline refers to using delimiters: $$ latex here $$ and ~ asciimath here ~, or any custom delimiters. Code block style refers to using tagged markdown code blocks. The tags can be either latex or asciimath. Because code block style is more limited, displayMode will be the displayMode passed to the extension config or the katex default.
Lorem ipsum dolor sit amet, ~E=mc^2~ consectetur adipiscing elit. Pellentesque porttitor, mauris a luctus aliquam, tellus purus porta nulla, eget finibus dolor dolor nec justo.
Lorem ipsum dolor sit amet, ~E=mc^2~ consectetur adipiscing elit. Pellentesque porttitor, mauris a luctus aliquam, tellus purus porta nulla, eget finibus dolor dolor nec justo.
```asciimath
E=mc^2
```
```asciimath
E=mc^2
```
```asciimath
c = +- sqrt(a^2 + b^2)
```
```asciimath
c = +- sqrt(a^2 + b^2)
```
```latex
c = \pm\sqrt{a^2 + b^2}
```
```latex
c = \pm\sqrt{a^2 + b^2}
```
```asciimath
sum_(i=1)^n i^3=((n(n+1))/2)^2
```
```asciimath
sum_(i=1)^n i^3=((n(n+1))/2)^2
```
```latex
\sum_{i=1}^n i^3 = \left( \frac{n(n+1)} 2 \right) ^2
```
```latex
\sum_{i=1}^n i^3 = \left( \frac{n(n+1)} 2 \right) ^2
```
```asciimath
lim_(x->0) = f(x)' = 2x + 5
```
```asciimath
lim_(x->0) = f(x)' = 2x + 5
```
```latex
\lim_{x \to{0}} = f(x)' = 2x + 5
```
```latex
\lim_{x \to{0}} = f(x)' = 2x + 5
```
```latex
\begin{aligned}
F(\textbf{w})
&= \sum_{k=1}^{K} \frac{n_k}{N} F_{k}(\textbf{w}) \\
&= \sum_{k=1}^{K} \frac{n_k}{N} \frac{1}{n_k} \sum_{i \in \mathcal{P}_{k}} l(\textbf{x}_{i}, \textbf{y}_{i}; \textbf{w})
\end{aligned}
```
```latex
\begin{aligned}
F(\textbf{w})
&= \sum_{k=1}^{K} \frac{n_k}{N} F_{k}(\textbf{w}) \\
&= \sum_{k=1}^{K} \frac{n_k}{N} \frac{1}{n_k} \sum_{i \in \mathcal{P}_{k}} l(\textbf{x}_{i}, \textbf{y}_{i}; \textbf{w})
\end{aligned}
```
Examples copied from mhchem's page.
```latex
\ce{CO2 + C -> 2 CO}
```
```latex
\ce{CO2 + C -> 2 CO}
```
```latex
\pu{1.2e3 kJ mol-1}
```
```latex
\pu{1.2e3 kJ mol-1}
```