Change the independent variable, find the change in the function, take the ratio and that's the derivative.

改变自变量,算出函数的变量,计算比值,这就是求导

耶鲁公开课 - 基础物理课程节选

So I don't want them to have to call something with two arguments.

所以我不希望它们,调用什么两个自变量。

麻省理工公开课 - 计算机科学及编程导论课程节选

It takes four arguments.

它有四个自变量。

麻省理工公开课 - 计算机科学及编程导论课程节选