1. The problem statement, all variables and given/known data ( V1.4 A.4 C1 - (1/V) ) dV = dA / A C1 is a constant, V=f(x), A=.25*pi*(.0222 - x2) I'm trying to simplify the equation into a form with no integrals or derivatives, so I can put it into MATLAB to spit out an expression for V as a function of x. Or is it possible to put all this into MATLAB (r2011a)? Sorry about the notation; I'm new to this. 2. Relevant equations 3. The attempt at a solution Derived this expression from Euler's, energy, ideal gas, continuity, and calorically perfect equations for compressible, isentropic flow. If I integrate both sides, I have trouble integrating: V1.4 A.4 dV It seems I have to know V(x) in the first place to integrate with respect to V.