Writing Mathematical Formulas in the GMAT Club ForumsThis post is just for those curious about writing neat maths formulae in forum posts... I looked it up because I was typing out questions and wanted to use symbols such as \(\leq\) rather than writing the <= symbol (I was using quite a few of them, which was starting to look confusing)

Don't you think that \({(\sqrt{9+sqrt{80}}+\sqrt{9-\sqrt{80}})^2}\) is much easier to understand than – (sqr root of (9 +sqr root of 80)+sqr root of (9 - sqr root 80))^2?

The simple instructions:(1) write formula as usual, e.g. x^2 + (x+3)^2 > 1

(2) highlight the text that is a formula, and then click the "m" button at the top of the edit box. This will enclose it with little "m" boxes (similar to adding color to a part of text), and tells the forum to display your text as a formula: \(x^2 + (x+3)^2 > 1\)

(3) that's it, simple. Most formula will display automatically.

Fractions, roots and other exceptions are below.

You can also see the detailed post by Bunuel here:

rules-for-posting-please-read-this-before-posting-133935.html#p1096628 Common symbols that can be used within your formula (selected with GMAT in mind):Fractions:\(\frac{a+b}{c}\) ---

\frac{a+b}{c} - note that numerator and denominator have to be enclosed in {} and you have to write out \frac to tell the system that it is a fraction.

Powers and roots\(x^2\) ---

x^2\(x^{12}\) ---

x^{12} - note that multi-digit powers require {}

\(\sqrt{x}\) ---

\sqrt{x} - note the {} and \sqrt to identify the square root

\(\sqrt[n]{x}\) ---

\sqrt[n]{x}Inequalities\(\approx\) --- \approx

\(\leq\) --- \leq

\(\geq\) --- \geq

\(\neq\) --- \neq

Subscript\(x_1, x_2\) --- x_1, x_2

Geometrical\(\pi\) --- \pi

\(90^{\circ}\) --- 90^{\circ}

\(\alpha\) --- \alpha

\(\angle\) --- \angle

\(\triangle\) --- \triangle

Full reference link for the extra curious: http://en.wikibooks.org/wiki/LaTeX/Mathematics#Math_operators
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