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在解析几何中,求两条曲线的交点问题通常用解方程组的办法来解决。但在极坐标系中,有时还需进行一番特殊的考虑和处理。否则会引起失解。例1 求在极坐标系下两曲线的交点:
In analytical geometry, the intersection of two curves is usually solved by solving the equations. However, special considerations and processing are sometimes required in polar coordinates. Otherwise it will cause misunderstanding. Example 1 Find the intersection of two curves in a polar coordinate system: