First Order Differential Equation in Cylindrical Coordinates

[Auburnman]

Consider cylindrical coordinates p = (x^2 + y^2)^.5  angle = arctan(y=x). Consider
your curve to be specified by z(p). Write down a (first order) differential equation
governing z(p)

please help!

 

[Mark44]

Before anyone can provide any help, you need to show that you have made an effort.

 

[Auburnman]

ok well i don't even know where to begin so its alittle hard to attempt a problem to prove you have tried it if u don't know where to start