It is the same thing as, in one variable calculus, when you take the anti-derivative of a function it is only defined up to adding the constant.

相当于在一元微积分中，取一个函数的不定积分，仅仅需要在结果后加一个常数。

youdao

It begins with the properties of the real Numbers and continues with a rigorous treatment of sequences, series, metric Spaces, and calculus in one variable.

它从实数的特性开始并且继续严格的处理顺序，系列，米制空间和在一个变量的微积分。

youdao

As the base of high mathematics, differential and integral calculus for function of one variable has the direct influence on the training of students mathematics attainment.

一元函数微积分学是高等数学的基础，直接影响学生数学素养的培养。

youdao

We're going to use calculus of one variable.

我们只用单变量微积分的知识就够了

耶鲁公开课 - 博弈论课程节选

I think that book will give you all the basic principles you need in calculus of one variable, more variables, elementary complex numbers, maybe solving some problems with vectors and so on, which you're going to get into.

我想那本书会给你所需的所有基本知识,包括一元和多元微积分,简单的复数运算,可以解决一些与矢量有关的问题,而这正是你们将要学的

耶鲁公开课 - 基础物理课程节选