(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

n=y*sqrt((V)/(*x) and Q=sqrt(v*V*x)*f(n)v

so i have V=-dQ/dx=(dQ/dn)*(dn/dx) and the final answer is V=(1/2)*sqrt((*V)/x)(n*df/dn-f)v

2. Relevant equations

3. The attempt at a solution

i have tried diff. by hand and also by maple and cannot get the answer. What am i doing wrong, because after all i have to quantities added together and that seems weird to me.

**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!

# Homework Help: Chain rule

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