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。

youdao

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。

youdao