The first part of this paper gives the numerically exact solution of a laminar boundary layer for the case of u1=kxα when a large temperature difference exists across the boundary layer, under the assumptions that μ, λ∝T0-76 and σ=0.73. The relation between the pressure gradient and the laminar separation point was found. The second part of this paper gives an approximate method of solution of the laminar boundary layer along the surface of a two dimensional body which is kept at a constant temperature. The flow around a turbine blade and the flow around a sphere were treated as examples.