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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