摘要
利用数学分析结合解析几何的方法，解决了椭圆内接定边长三角形的面积最大值的问题。对于不同的定长给出了达到最大面积的计算公式和达到最大面积时三角形的具体坐标位置。
By using the methods of mathematical analysis and analytic geometry,the maximum of triangle area with a fixed side inscribed in a circle is discussed.For the variable length of the fixed side,the coordinates of vertex of the triangle are shown and the maximum of the area is calculated by the conducted formula.
