# What do you call:

1. Apr 24, 2007

### Monochrome

I'm doing revision for next semesters exams and I ran across this:

http://mathworld.wolfram.com/EulerFormula.html

Specifically formula no.8. I've seen it before but can't find it in my notes, I forgot what splitting

$${\frac {d z}{d\theta}}$$

on either side of the equals sign was called. But I do remember being warned not to think that it is just division.

Last edited: Apr 24, 2007
2. Apr 24, 2007

### HallsofIvy

Staff Emeritus
That is "separating" the differential. What you have is a "separable" differential equation and you separated the variables.