three arbitrary constants. By using Bell polynomials, the Hirota bilinear form is derived, as
well as the N-soliton solutions are solved. Then the propagation and interaction of single
and double soliton solutions have been simulated graphically, and the properties of solitary
waves are well presented. By virtue of the Hirota bilinear form, the bilinear Bäcklund
transformation with two arbitrary real functions is obtained. Based on this, we consider the …