Writing Mathematical Formulas in the GMAT Club Forums This

Writing Mathematical Formulas in the GMAT Club Forums

This 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?



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:
https://en.wikibooks.org/wiki/LaTeX/Mathematics#Math_operators