In the paper, it provides the geometrical solution to extreme value of 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
The optimal(or minimum)condition is discussed with the help of LSPP theory, and a geometrical explanation is given.
文中还应用这一方法讨论了最小条件（判别准则），并给出了几何解释。
3
In this paper, the first order approximation theory of dynamic logging is obtained by using the geometrical factor theory in downhole condition and RC network theory.