Wavelet collocation methods for solving neutral delay differential equations

In this paper, we proposed wavelet based collocation methods for solving neutral delay differential equations. We use Legendre wavelet, Hermite wavelet, Chebyshev wavelet and Laguerre wavelet to solve the neutral delay differential equations numerically. We solved five linear and one nonlinear problem to demonstrate the accuracy of wavelet series solution. Wavelet series solution converges fast and gives more accurate results in comparison to other methods present in literature. We compare our results with Runge-Kutta-type methods by Wang et al. (Stability of continuous Runge-Kutta-type methods for nonlinear neutral delay-differential equations," Appl. Math. Model, vol. 33, no. 8, pp. 3319-3329, 2009) and one-leg theta methods by Wang et al. (Stability of one-leg theta method for nonlinear neutral differential equations with proportional delay," Appl. Math. Comput., vol. 213, no. 1, pp. 177-183, 2009) and observe that our results are more accurate.