So, what does the second derivative test say?
那么二阶导数判定是怎样的呢?
Basically, the answer for us is that we don't have a second derivative test in this situation.
基本上,答案就是,我们不可以用二次导数来验证这个情况。
Basically, the answer for us is that we don't have a second derivative test in this situation.
基本上,答案就是,我们不可以用二次导数来验证这个情况。
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