# Application of partial derivatives

sorry folks i dont even have an idea to this questions solution so i hope u people may like to help me. im stuck to it since last week nd i hope its from partial derivative... plz suggest me a book or a hint or the solution.

Let a long circular cylinder of unit radius be placed in a large body of fluid flowing with uniform velocity, the axis of cylinder being perpendicular to the direction of flow. determine the steady flow.also show that the speed of the fluid at points on the cylinder surface is 2A|SinØ|.