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介绍了关于函数连续的概念,并讲述了在授课中如何运用观察和分析图像的方法掌握函数在某点连续的条件以及在极坐标系下求面积时怎样确定积分限。
Introduced the conception of function continuation and described how to use the method of observation and analysis of images in instruction to know how to determine the integral limit when the function is continuous at a certain point and how to find the area under the polar coordinate system.