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高考中的解析几何问题,有的是压轴题,有时因为它的计算量大,多数学生无法坚持算到最后一步.究竟怎样才能降低运算量,值得我们去探究.通过选修4——4《极坐标与参数方程》,我们可以学到利用极坐标,大大简化计算量.下面举几个例题,来说明极坐标的“美”.
Analysis of the college entrance examination geometry problems, and some finale questions, sometimes because of its large amount of computation, most students can not insist on the final step.What can reduce the amount of computation, it is worth to explore.Through the elective 4 - 4 “polar coordinates and Parameter equation ”, we can learn to use polar coordinates, greatly simplifying the calculation. Here are a few examples to illustrate the polar “ beauty ”.