Variational Principles with Several Adjustable Parameters
This chapter also focuses on the development of the variational principles. Firstly, it introduces three patterns of functional transformation, i.e., pattern I, pattern II and pattern III. Then, on the basis of pattern III, some variational principles with several adjustable parameters are formulated. Finally, a variable-substitution-multiplier method is also proposed based on pattern I and pattern II[1,2].
Keywordsvariational principle functional transformation adjustable parmeters variable-substitution-multiplier method
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