So you've learned about indefinite integrals and you've learned about definite integrals. Have you wondered what's the connection between these two concepts? You will get all the answers right here. Beware, this is pretty mind-blowing.
The fundamental theorem of calculus is definitely one of the most important theorems of all time! It relates differential calculus and the concept of the derivative with integral calculus and the concept of the integral. Learn all about it here!