Wenxue li put forward a sufficient condition of conditional extreme value with Lagrange function but his proof is wrong.
摘要李文学用拉格朗日函数提出求条件极值的充分条件，但他的证明却是错误的。
Aim To study the rules governing pressure distribution of traveling charge under the condition of Lagrange hypothesis.
目的研究拉格朗日假设条件下随行装药的膛内压力分布规律。
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；
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