【摘要】 对参数方程表示下的非封闭曲线与平行于坐标轴的直线所形成的一类曲边梯形的面积给出了一个简便计算公式更多还原

【Abstract】 In this paper,we have discussed a class of bent-side trapezoid which is constructed by the non-close curve expressed by parametric equation and the cine paralled to coordinate axis,and we have obtained a simple and convenient Calculation formula of area concerning above the trapezoid.更多还原