高中数学中 ,三次函数中的切线问题是新教材导数章节中的一颗璀璨的“明珠” ,它涉及高中数学中较多的知识点和数学思想方法 ,是新旧教材知识、方法的契合点 .它与其他知识的综合 ,更是一曲优美的“交响乐” ,倍受命题者的青睐 ,已成为高考中的“新宠” .由于切线问题知识上具 In high school mathematics, the tangent problem in the third-order function is a bright “jewel” in the derivative chapter of the new textbook. It involves more knowledge points and mathematics thinking methods in high school mathematics, and is a fitting point for the knowledge and methods of new and old textbooks. Its integration with other knowledge is a beautiful “symphony”. It has become the favor of propositioners and has become the “new darling” in the college entrance examination. Due to the knowledge of tangent problems