In addition to the "Fast pick" symbols to the right of a reply box, there is MUCH more you can do!

There is a drop-down pre-format list when you click on the Ʃ button, to the right of the second button row in the Advanced Editor. This brings up the TeX/LaTeX quick button bar. BTW, it is pronounced "Tech".

If you are not familar with LaTeX, the menu is not intuitive, however, but will be once you see the basics outlined here.

If you refer to this quickref, and use the equations with posts as often as needed, there are only FIVE THINGS you need to remember! You can then type in "fancy" formulas without relying on a click and fill system. When you preview or submit a post, the "code" is automaticallly turned into an image and linked inline with your post, as seen all over below!

The basic concepts: Parameters are held in braces {}, symbols/operators are used with \ preceeding, A few examples are shown below:

- Subscript: Inside the tex and /tex tags, this is easy. The 'command' is _ . Examples: \( RDS_{ON}, V_{RMS \sim }, I_1\) For the single subscript, such as '1', no braces are needed, i.e. I_1, for more than one character, braces are used, such as RDS_{ON}. Subscripts can be "cascaded" as well, e.g. \(I_{R}_{\small 1}\) If the overall image is too large, use the \small operator right after the opening tex tag.
- Superscript: This is as easy, and follows the same rules as subscript, but with a different operator. Just like exponent in computer languages, that operator is ^. So to write \(2^2\), Use 2^2 inside tex tags! Simple, eh?
- If you are squaring or cubing things, you need to "undo" them in formulas. This is done with \sqrt. \sqrt takes one parameter and one optional, the number for the square root, \(\sqrt{192}\). Remember, the full operand needs to be in braces, If I put 192 in the above without braces, it turns out like this: \(\sqrt 192\) That is probably not what you were trying to say. For cube root, the more generic is \sqrt
**[**root**]{**operand**}**So for the 4th root of 196, it is written \sqrt[4]{196} which displays as \(\sqrt[4]{196}\) when the tex tags are around that same text. Notice the brackets instead of braces around the root! - Logic. This is one area I'd like to see more use. For active low/inverted, use \overline{Val}, \overline{A} produces \(\overline{A}\) Add in \cdot, the standard + sign on keyboard, and you can write any logic in "Textbook Quality". \overline A \cdot \overline B \cdot C + D produces: \( \overline A \cdot \overline B \cdot C + D\). Of course, dots for working with matrices or in formulas such as 2*pi*f or: \(\omega = 2 \cdot \pi \cdot f\). That last part, was written as \omega = 2 \cdot \pi \cdot f. Most greek letters are simply their name with a backslash, such as \Theta - \(\Theta\)
- An intro wouldn't be complete without Fractions: Many get stuck working with fractions. Simply remember that all commands are "Nestable", and it works out great! Balancing the {} braces can get hairy with a Very complex equation, but it usually isn't that hard. Preview post tells you immediately where something is missing with a little practice.

Here's the hard part about fractions: \fra or \frac, followed by {over}{under}. \frac{1}{2} = \(\frac{1}{2}\) Shocking! I know. With nesting rules, the parallel resistance equation is fairly straightfoarward: \frac{1}{\frac{1}{R_1}+\frac{1}{R_2}+{\dots}+{\frac{1}{R_N}}} Becomes: \(\fra{1}{\fra{1}{R_1}+\fra{1}{R_2}+{\dots}+{\fra{1}{R_N}}\)

I hope this of some use to you, there are Many More commands and fun formatting available, but the ones above cover most of what is spoken of!

Here's to no more ugly formula questions!