http://www.ck12.org Chapter 14. Concepts of Calculus
- How do integrals relate to sums?
You learned that limits enable you to work infinitely close to a point without caring what happens at the point itself.
Using this subtle approach, you began to answer two of the biggest questions in Calculus. 1) What is the slope of
the tangent line at a point on a curve? 2) What is the area under a curve?