Here is a list of some widely used email clients, in alphabetical order by operating system.
Mac OS:
Microsoft Windows:
Unix/Linux:
Palm OS:
Pocket PC:
... + \left( \frac{b}{a} \right) x + \frac{c}{a}=0 </math> which is equivalent to <math>x^2+\frac{b}{a}x=-\frac{c}{a}.</math> The equation is ...