An analytical strong method, the homotopy analysis method (HAM), is employed to study the mixed convective heat transfer
in an incompressible steady two-dimensional viscoelastic fluid flow over a wedge in the presence of buoyancy effects. The twodimensional
boundary-layer governing partial differential equations (PDEs) are derived by the consideration of Boussinesq
approximation. By the use of similarity transformation, we have obtained the ordinary differential nonlinear (ODE) forms of
momentum and energy equations. The highly nonlinear forms of momentum and energy equations are solved analytically. The
effects of different involved parameters such as viscoelastic parameter, Prandtl number, buoyancy parameter, and the wedge angle
parameter, which is related to the exponent
