www.khanacademy.org/math/ap-calculus-ab/area-and-arc-length-ab/area-between-curves-ab/v/evaluating-simple-definite-integral

You can use integral calculus to find the amount of cement you will need. .... You use the indefinite integral to find the definite integral evaluated between two ...

tutorial.math.lamar.edu/Classes/CalcI/ComputingDefiniteIntegrals.aspx

So, to evaluate a definite integral the first thing that we're going to do is .... Remember that the vast majority of the work in computing them is first finding the ...

www.mathsisfun.com/calculus/integration-definite.html

Integration can be used to find areas, volumes, central points and many useful things. But it is often used to find the area under the graph of a function like this:.

www.intmath.com/integration/4-definite-integral.php

Dec 1, 2015 ... We see how to find the definite integral, and see some applications.

www.symbolab.com/solver/definite-integral-calculator

Free definite integral calculator - solve definite integrals with all the steps. Type in any integral to get the solution, free steps and graph.

www.wolframalpha.com/widgets/view.jsp?id=8ab70731b1553f17c11a3bbc87e0b605

Aug 1, 2010 ... Get the free "Definite Integral Calculator" widget for your website, blog, Wordpress, Blogger, or iGoogle. Find more Mathematics widgets in ...

mathworld.wolfram.com/DefiniteIntegral.html

is restricted to lie on the real line, the definite integral is known as a Riemann integral (which is the usual definition encountered in elementary textbooks).