Assume for simplicity that the HPLC plate height, H, can be given by Equation 31-27 as H=B/u​+Cₛ​u+Cₘ​.u=B/u​+Cu where C=Cₛ​+Cₘ​.
(a) By using calculus to find the minimum H, show that the optimum velocity uopt​ can be expressed as uₒₚₜ​=√(B​​/C)