# Integrating WRT d^2 x or d^3 x

## Main Question or Discussion Point

Hi Guys,

Ive gone through a 3 year physics degree but cant remember ever touching on this? Im doing some work and some of the theory contains integrals of d2x or d3R for instance. I have no idea how to do these.

Any help?

Thanks all

Cyosis
Homework Helper
They represent integrals over a surface or volume.

Example:
$$\int dV=\int d^3x$$

They represent integrals over a surface or volume.

Example:
$$\int dV=\int d^3x$$
...but rather nonstandard notation, so you should make sure your reader knows what you mean if you ever write it...

Thanks guys, i thought it had something to do with that. Im still not sure how to evalute one when no symbols are given. Eg I have this function

$$\int$$ e$$^{-abcd}$$ d3c

and somehow they get

(2pi)3/2$$\partial$$(bd)

(sorry i suck at latex lol)

where does the 2 pi come from WHAT IS GOING ON

thanks all