1. The problem statement, all variables and given/known data Question Details: The question reads: Show that the equation: dA/A + dv/v + dρ/ρ = 0 applies to a one-dimensional steady flow. (Here 'one dimensional' means that both the density ρ and seed v = - v . n (vectors) are constant across any cross-sectional area A cutting the flow.) Please help! 2. Relevant equations d/dt ∫V ρ dV + ∫A -ρv⋅n dA = 0 3. The attempt at a solution I know that the equation they gave us above is the differential equation for ρ*v*A = constant, I just don't know where to go from there.