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高中教材导数内容的增加,为我们证明不等式提供了新方法,开辟了新途径.利用导数证明不等式,也是近年高考试题中的热点与难点.其证明的
The increase of high school teaching material derivative content provides a new way for us to prove inequality and opens up new ways. Using derivative to prove inequality is also a hot and difficult point in college entrance examination questions in recent years.