New transform formulae for differential transformation method with applications to the nonlinear plane autonomous systems
This work presents a new derivation technique for new differential transform formulae of a product of composite functions. The new formulae are applied to nonlinear plane autonomous systems to demonstrate their efficiency and reliability. The approximate series solutions estimated by the different...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Prince of Songkla University
2020-02-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | https://rdo.psu.ac.th/sjstweb/journal/42-1/12.pdf |
| Summary: | This work presents a new derivation technique for new differential transform formulae of a product of composite
functions. The new formulae are applied to nonlinear plane autonomous systems to demonstrate their efficiency and reliability.
The approximate series solutions estimated by the differential transform method (DTM) and the multistep differential transform
method (MsDTM) are then compared with the flow direction of the vector fields defined by the original system and an analytical
solution calculated by the phase-plane method. We found that the MsDTM results are in better agreement with the analytical
solution than the DTM ones. Moreover, the MsDTM can be applied to systems whose analytical solutions are unobtainable. The
approximate solutions by the MsDTM have the same direction to the flow of the vector field of the system. It follows that the
proposed new formulae are reliable and efficient. |
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| ISSN: | 0125-3395 |