Then its generalized variational principle is established on the basis of Lagrange multiplier method by absorbing the first kind of boundary condition.
然后利用拉格朗日乘子法,吸收第一类边界条件,从而得出其广义变分原理;
The derivation of generalized variational principles with preconditions by the use of the Lagrange multiplier method.
应用拉氏乘子法推导有先决条件的广义变分原理。
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