今天终于看明白兰琦的第二种解法了,其实就是邻域分析(2022年新高考I卷第7题))
2023-03-11 09:17阅读:

兰琦老师的解法二,实际就是以(0,0)为公共起点,比较三个函数增速。在一个区间宽度为0.1的狭小区间内比较三个函数增速,增速快者更大。
参考:
2022年全国新高考I卷第7题(对数的进阶放缩)
https://blog.sina.com.cn/s/blog_6b5ef5920102z8ou.html
微讲题:此类比大小,用领域分析法做,太秒了
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命题人详解当中,对于a>c证明中,又一次使用了
切线放缩。妙不可言。