1. Sep 3, 2005

### ludi_srbin

Hmmmmmm...Well I guess my first question is how do I write the integral...Do I have to have some sort of program or...???

Anyway, lets say I have some kind of simple integral and there is dx in front of it. What is that dx there for.

2. Sep 3, 2005

### Jameson

Do you mean how to you notate it? The "dx" refers to the variable of integration. If you were in terms of y, you would write "dy".

An example: $$\int xdx$$ This is in terms of the variable x, so we notate that by writing dx.

3. Sep 3, 2005

O thanks.

4. Sep 4, 2005

### HallsofIvy

Staff Emeritus
If you are asking about how to put such equations on this forum, double click on any equation you are interested in and a window will open showing the Latex code.

Double click on:
$$\int xdx$$