Beni-Suef University Journal of Basic and Applied Sciences

Table 4 Comparison of the Van der Pol oscillator response for the present solution and the ode15s solution with μ = 20

From: Novel approach for solving higher-order differential equations with applications to the Van der Pol and Van der Pol–Duffing equations

t	x(t) present	x(t) ode15s	Absolute error
5	1.8204	1.8199	5.00E−04
10	1.5981	1.5971	1.00E−03
15	1.2545	1.2517	2.80E−03
20	− 1.9086	− 1.9075	1.10E−03
25	− 1.7097	− 1.7075	2.20E−03
30	− 1.445	− 1.4409	4.10E−03
35	1.9901	1.9884	1.70E−03
40	1.8081	1.8055	2.60E−03
45	1.582	1.5784	3.60E−03
50	1.2195	1.2104	9.10E−03

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