The original version of this story appeared in Quanta Magazine. Calculus is a powerful mathematical tool. But for hundreds of years after its invention in the 17th century, it stood on a shaky ...

In the Idea of Limits video, we introduce the idea of limits and discuss how it underpins all of the major concepts in calculus. In the Limit Laws video, we introduce the limit laws and discuss how to ...

In this math tutorial, we discuss the essential formulas for functions in precalculus, which are also highly relevant for algebra 2 and calculus students. We'll cover concepts such as even and odd ...