Research Article

A Reliable Treatment of Homotopy Perturbation Method for Solving the Nonlinear Klein-Gordon Equation of Arbitrary (Fractional) Orders

Figure 6

𝑢 ( 𝑥 , 0 . 3 ) of Example 4.2 Case 3 for 4th-order HPM approximation as parameterized by 𝛼 and 𝛽 .
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