In this work, we investigate the anisotropic Bianchi type I cosmological model in chiral set-up a twofold manner. Firstly, consider quintessence plus [Formula: see text]-essence-like model, where two scalar fields but only one potential term is considered. Secondly, look at addition to terms are taken into account as well standard kinetic energy and mixed term. Regarding second it shown that po...

in this article, the modified exp-function method is used to construct many exact solutions to the nonlineargeneralized k(n,n) and bbm equations with variable coefficients. under different parameter conditions, explicitformulas for some new exact solutions are successfully obtained. the proposed solutions are found to beimportant for the explanation of some practical physical problems.

differential transform method has been applied to solve many functional equations so far. in this article, we have used this method to solve wave-like equations. differential transform method is capable of reducing the size of computational work. exact solutions can also be achieved by the known forms of the series solutions. some examples are prepared to show theefficiency and simplicity of th...