In the paper, it provides the geometrical solution to extremevalueof many variables function by geometric properties of objective function or constraint condition.
本文中,利用目标函数或约束条件的几何性质,提供了某些多元函数极值或最值问题的几何解法。
2
Wenxue li put forward a sufficient condition of conditional extremevalue 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。
3
The criterion extremevalueof binary function for first partial derivative is given by means of the mean value theorem. The two theorems are obtained.