Bill 3:22 pm on June 1, 2012  

easy equations!

\oint \vec{F}\oint \vec{F} \cdot d\vec{s}=0x = a_0 + \frac{1}{a_1 + \frac{1}{a_2 + \frac{1}{a_3 + a_4}}} \cdot d\vec{s}=0