纵观近年全国各地的高考试题与模拟试题发现:有关圆锥曲线中参数范围问题是考试中的常见题型、重点题型,它的命题内容包罗万象、试题形式新颖别致,题型格局创新连连.圆锥曲线中参数范围问题常与平面向量、函数与导数、三角、不等式等知识综合,以反映高考在知识点的交汇处命题的 Throughout recent years, examination questions and simulation test questions have been found across the country: The parameter range question in the conic section is a common question type and key question type in the examination. Its proposition content is all-inclusive, the test form is novel and unique, and the question type pattern is continuously connected. Cone The parameter range problem in the curve is often integrated with knowledge of the plane vector, function and derivative, triangle, inequality, etc. to reflect the proposition of the college entrance examination at the point of intersection of knowledge points.