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在圆锥曲线中,会遇到求圆锥曲线上的动点到某个定点距离的最值问题,往往会考虑这个点就是圆锥曲线的顶点,这很容易产生错误。通常结合到利用函数的单调性和二次函数中对区间和对称轴的讨论来全面地解决问题。
In the conic, you will encounter the maximum value of the fixed point distance from the moving point on the conic curve. It is often considered that this point is the vertex of the conic. This is prone to error. The problem is generally solved by combining the monotonicity of functions and the discussion of intervals and symmetry axes in quadratic functions.