intermediate value formul

• 中值定理

intermediate value formul的用法和样例：

例句

1. Rolle's theorem is a special case of the mean value theorem.
   罗尔定理是中值定理的一种特殊形式。
2. By defining the directed area of polygons, We went into its properties and applications andobtained several new fixed value theorems of polygons.
   通过给出平面多边形的有向面积，探讨有向面积的一些性质和应用，提出一平面多边形的若干新的定值定理。