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Theory and Modern Applications

Table 3 Variation of the exact result with HPTM solution of \({\phi }({{\chi }},{{\eta }})\) at \({\eta }=0.01\)

From: Numerical investigation of fractional-order Kersten–Krasil’shchik coupled KdV–mKdV system with Atangana–Baleanu derivative

χ

Exact result

HPTM result

Absolute error

5

−2.840462381

−2.840462380

1.444186835E−09

4

−2.576135914

−2.576135916

7.505047070E−10

3

−1.915858303

−1.915858299

4.760423501E−09

2

−0.480345856

−0.480345845

1.127798505E−08

1

1.718468335

1.718468318

1.736182461E−08

0

2.999999985

2.999999910

7.500000002E−08

−1

1.718904452

1.718904435

1.715811279E−08

−2

−0.479962035

−0.479962025

1.021909119E−08

−3

−1.9156620237

−1.915662020

4.383116417E−09

−4

−2.576054184

−2.576054186

1.160759310E−10

−5

−2.840430898

−2.840430897

5.811609752E−10