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The unsteady hydrodynamics laminar flow with free convection of Cu-water nanofluid film under Marangoni surface tension effect over a stretching sheet has been investigated.The surface tension is assumed to vary linearly with temperature.The governing partial differential equations are transformed into coupled nonlinear ordinary differential equations by similarity transformation.The numerical and analytical solutions are obtained simultaneously using the shooting technique and homotopy analysis method (HAM).The influences of various relevant parameters on the flow field are elucidated through graphs and tables.