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【命题趋势探寻】圆锥曲线的综合问题在高考中多以高档题、压轴题出现,主要涉及直线与圆锥曲线的位置关系的判定、弦长问题、最值问题、对称问题、轨迹问题等相关综合问题,突出考查了数形结合、分类讨论、函数与方程、等价转化等数学思想方法,要求考生分析问题和解决问题的能力、计算能力较高。在引入平面向量的内容后,
[Proposition trend exploration] The synthesis problem of conic section mostly appears in high-grade and final-axis problems in college entrance examination. It mainly involves the determination of position relationship between straight line and conic curve, chord length problem, the most value problem, symmetry problem, trajectory problem and other related synthesis. Problems, such as mathematics and methods of combination of number and shape, classification and discussion, functions and equations, and equivalent transformation, are highlighted, and require examinees to analyze problems and solve problems with high computational capabilities. After introducing the content of the planar vector,