Merad, M2022-04-272022-04-272007http://hdl.handle.net/123456789/12935The Duffin–Kemmer–Petiau (DKP) equation for spin 0 and 1 with smooth potential and position dependent- mass is solved. The solution is given in terms of the Heun function. The step case for potential and mass are deduced as a limiting case. The boundary conditions are also discussedenDKP equationsmooth potentiaposition-dependent massArticle