1. The problem statement, all variables and given/known data Write down formulae for dX in terms of dA, dB, dC if: X = [(A) (B^2)] / C 2. Relevant equations I'm using the formula below as this corresponds to this relationship. (dX/X)^2 = (dA/A)^2 + (dB/B)^2 3. The attempt at a solution For the first line, not the actual solution, I'm getting either: (dX/X)^2 = (dA/A)^2 + (2dB/B)^2 + (dC/C)^2 or (dX/X)^2 = (dA/A)^2 + (dB/B)^2 + (dB/B)^2 + (dC/C)^2 Then if I follow through on either line, I get a different answer. I was wondering which is the correct line to begin with? I think it's the second option. Thank you.