please solve mathematically

Consider a Newtonian fluid that flows over a flat surface under laminar flow conditions with a boundary layer velocity that can be approximated by: Vx=Uy/, where is the thickness of the boundary layer and U is the velocity of the fluid outside of the boundary layer. a) Use Van-Karman approximation (Eq. 12-38 in the book) and obtain and expression for (x). b) Calculate the shear stress at the wall. c) Determine the drag coefficient on the plate of length M