You take the y component, take the derivative with respect to x, take the x component, differentiate with respect to y, you should get the same answer. And that is important to know.

对y分量，关于x求导，对x分量，关于y求导，应该得到相同结果，这个知识点很重要。

youdao

And then, we differentiate our answer with respect to y, and we compare with that to get the complete answer.

然后对答案求出关于y的偏导，和N比较一下，就能得出完整答案了。

youdao

I mean, on the other hand, you could start with integrating with respect to y and then differentiate and match with respect to x.

另一方面，可以从对y积分开始,然后关于x求导，进行匹配。

youdao

We're going to differentiate with respect to q1, the thing we're trying--our control variable, the thing we're trying to maximize the thing with respect to and set it equal to 0.

对q1求导,q1是控制变量,也就是我们想要求出的最大值,令它等于0

耶鲁公开课 - 博弈论课程节选

I differentiate a second time and check the sign, so the second order condition, I differentiate this expression again with respect to q1.

我们对它进行二次求导然后看符号,这个式子的二阶导数,就是一阶导数再对q1进行求导

耶鲁公开课 - 博弈论课程节选

We're going to differentiate this with respect to q1 and then what?

对q1求导之后还要做什么

耶鲁公开课 - 博弈论课程节选