# Partial derivative

1. Dec 5, 2009

### chrisdk

1. The problem statement, all variables and given/known data

Differentiate:

$$y'''+ty''+y'+y'=0$$

2. Relevant equations

3. The attempt at a solution

I tried to use this definition:

$$(y')'=y''$$

I'd be thankful, if somebody could show me the rules of differentiating y'.

2. Dec 5, 2009

### Dick

You've got it. (y')'=y'', (y'')'=y'''. Etc. Don't forget to use the product rule on ty''.