Approximate Solutions of Delay Differential Equations with Constant and Variable Coefficients by the Enhanced Multistage Homotopy Perturbation Method

Table 1

Computer time needed to solve the damped Mathieu equation with time delay. The order solution of the EMPHM approach is chosen to guarantee the convergence of its approximate solution.

dde23 ms	EMHPM
			Zeroth ms	First ms
19	15	5	4	5
	20	4	6	6
	40	3	12	12
	60	2	17	18
	60	5	18	19
	60	10	20	21