Say I have a funciton sin(theta - phi)(adsbygoogle = window.adsbygoogle || []).push({});

theta and phi are both time-dependant. How do I take the time derivative of this function? Is there a general notation or do I have to assume theta = w1t and phi = w2t and go with that?

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

Dismiss Notice

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!

# Time derivatives where there's no explicit time dependence

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