摘要
Green公式给出了平面图形面积与曲线积分的关系,利用这种关系给出了平面曲线等周不等式的一个简捷证明,并给出了平面图形面积的一个近似计算公式以及两个教学计算实例.
As is known to all, the Green＇s Formula presents the relationship between the tlat graphic area and the curve integral. Based on this fact, a simple proof of the isoperimetric inequality is presented in this paper, and an approximate formula on flat graphic area is also given. Finally, two specific practical examples are also illustrated.
出处
《大学数学》
2013年第2期82-85,共4页
College Mathematics
关键词
Green公式
等周不等式
面积
近似公式
Green＇ s formula
isoperimetric inequalities
area
approximate formula
