# Start with Equation IVb.2.5 and obtain Equation IVb.2.6. [Hint: By assuming constant pressure…

Start with Equation IVb.2.5 and obtain Equation IVb.2.6.

[Hint: By assuming constant pressure throughout the flow, the left hand side is

simplified as dP/dx = 0. To simplify the right hand side, first substitute for

the last term from the integration-by-part technique. Now write the Bernoulli

equation and conclude that d(Vx)/dx is also zero.]