Classification of differential equation

[volican]

Hi,

I have an equation that takes the form: ax''-by' + c = 0 where x'' is second order with respect to time and y' is first order with respect to time. Would this be classed as a partial differential equation?

Thanks very much for your help :)

 

[BvU]

Partial differential equations deal with functions of more than one variable. It looks as if yours is a single independent variable only equation.