1. The problem statement, all variables and given/known data Find the absolute error for the following function: f = (xy/z)+5w 2. Relevant equations Equation for an error vector: df = (df/dw)dw + (df/dx)dx + (df/dy)dy + (df/dz)dz Equation for the absolute error: (df)^2 = (df/dw)^2(dw)^2 + (df/dx)^2(dx)^2 + (df/dy)^2(dy)^2 + (df/dz)^2(dz)^2 3. The attempt at a solution I found what I hope are the correct partial derivatives : df/dw = 5 df/dx = y/z df/dy = x/z df/dz = (-xy)/z I just don't know what to do now that I've found the partial derivatives. Do I just substitute it into my second equation, or are there more steps after that? Thanks!