Which Formulas have this format?

[[V]]

Can you please give me any physics related formula that appears in this format?

$$\frac{x^2}{4}$$

Its part of a really crazy proof I am trying to do. The variables are irrelevant. Anything that looks like this would be fine!

Thanks!

 

[Studiot]

How about the area of a circle

$$A = \frac{{\pi {d^2}}}{4}$$

 

[vivekrai]

Or it could be , the Rotational Kinetic Energy of the body :

[PLAIN]http://codecogs.izyba.com/gif.latex?R.E%20=%20\frac{1}{4}KR^{2}

Where K is the modified Moment of Inertia for the body.

 

[angus1024]

I think the question referred to a string of char="$$\frac{x^2}{4}$$" (obviously (x/2)**2). Some clever people can somehow turn such strings into beautifully formatted maths formula on a webpage formatted 'on the hoof' and not displayed as images.

Please can some explain how to do this as I wish to put maths equations on web pages.