This article concerns the fourth order differential equation x + axâ€²â€²â€² + bxâ€²â€² + g(xâ€²) + h(x) = p(t). Using the Cauchy formula for the particular solution of non-homogeneous linear differentialâ€¦ (More)

Problem statement: Not all differential equations can be solved analytically, to overcome this problem, there is need to search for an accurate approximate solution. Approach: The objective of thisâ€¦ (More)

We give sufficient criteria for the existence of convergence of solutions for a certain class of fourth-order nonlinear differential equations using Lyapunov's second method. A complete Lyapunovâ€¦ (More)