In this work, we find the differential transforms of the functions $tan$ and $sec$, and then we applied this transform on a class of partial differential equations involving $tan$ and $sec$.
This article develops a direct method for solving numerically multi delay-fractional differential and integro-differential equations. A Galerkin method based on Legendre polynomials is implemented for solving linear and nonlinear of equations. The main characteristic behind this approach is that it reduces such problems to those of
solving a system of algebraic equations. A conver...
