Fractions

To enter a fraction, such as , type "(a)over(b)"

Examples
{1+(x^2-3)}over{2} is displayed as
(1m)over(2s + 3s) is displayed as
(1+x)over(x) is displayed as
x^{2*(a^2+1)}+5 is displayed as
(x^2)^2+5 is displayed as