The middle child is influenced by many variables; however, middles are less likely to take initiative and more anxious and self-critical than others.
老二比较多变,然而,老二不太可能主动,也比其他人更焦虑、更易自我批判。
We should therefore not use global variables inside critical loops.
所以在比较关键的循环中,我们要不使用全局变量。
I should say that is for a function of two variables to try to decide whether a given critical point is a minimum, a maximum or a saddle point.
但这种办法并不普遍,只能用于二元函数,来判断是极小值点、极大值点还是鞍点。
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