(adsbygoogle = window.adsbygoogle || []).push({}); material derivative???

I have to find the material derivative of the density P for the following steady state flow:

P = -1-2xy-3z^3 and u = (3x-z, y+3z, x-y)

I have looked at previous examples but im not sure what i have to do with the density -1-2xy-3z^3 ..... ?

please help.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Material derivative?

**Physics Forums | Science Articles, Homework Help, Discussion**