函数极值的进一步探讨

Further study on extremum of function

目的 :对某命题作进一步探讨 ,追求结果的完备性和完美性。方法 :逻辑推理和几何说明。结果 :得出命题A和命题B。结论 :某命题和本文的命题A。

Objective: After further on that proposition, I intend to purse the completion and perfection of the result. Methods: logical reasoning and geometrical explaining. Results: Coning to proposition A and proposition B. Conclusion: Proposition 4 and proposition A?proposition B of this writing have attained planned goal.