# Thread: Deriving the general solution to this ODE

1. ## Deriving the general solution to this ODE

Hi,

How does one derive the general solution to this ODE ($\displaystyle A$ is a constant)?

$\displaystyle \partial P / \partial x = AP \partial P/ \partial \theta$

Thanks.

2. ## Re: Deriving the general solution to this ODE

Well, one problem you have is that this is NOT an "ODE"! Since P is a function of two variables, and your equation involves derivatives with respect to both, that is a partial differential equation

But I am puzzled as to where you got this problem. Are you not taking a class in partial differential equations? If you are, then you should have encountered the "method of characteristics".