I am very happy with the LaTex support provided by WordPress. To type an in-line formula in WordPress, one can simply type **$ latex your-latex-code-here… $ **(you need to remove the space between $ and latex to make it work).

So, for example,

`$ latex \int_0^\infty \mathrm{e}^{-x}\,\mathrm{d}x $`

will produce

In order to display a formula type equation, simply add **<p align=”center”>**. For example

` <p align="center"> $ latex \int_0^\infty \mathrm{e}^{-x}\,\mathrm{d}x $ </P>`

produces

In addition to these two formats, you can also change the size of the LaTeX by specifying an **s** parameter after the code.

s option can go from -4 to 4 (0 is the default). For example

`$ latex \LaTex&s=4$ will give you `

Also when you insert an in-line LaTex elements, it is normally vertically aligned way too high. The result may relate to which theme you use but the vertical alignment can be manually adjusted. For example,

`The formula looks like this before any adjustment , while after using this code in HTML editor <span style="vertical-align:-25%;"> your-latex-code-here </span>, the formula become this `

You can change the percentage as you like, depending on which theme you use.

One last thing is about the LaTex syntax. Since there are already a lot of articles online teaching you how to write LaTex code, I only recommends two websites (link and link) which include almost everything you need in order to write a LaTex formula.