If you have a function representing rate, what does the area under its curve represent? Area under rate function gives the net change. The definite integral of a rate function gives us the net change in the quantity described by the rate.

Using definite integral to solve a word problem about the growth in the population of a town.

Very nice tutorial explaining integration by parts in calculus. The tutorial explains the formula in detail and then has links to online examples the student can work.

Explore the world of integration in this mini-lesson. Learn the integration rule and other integral concepts and try your hand at a few practice questions.

College professor Dan Bach offers a review of the calculus concepts of integrals and vectors. Examples and animated graphs are provided.

Great resource to practice and strengthen math skills pertaining to Calculus. Math worksheets are printable, may be customized, and include answer keys.

This site explains the intgration by parts, giving formulas and examples. The site also includes a link to an interactive self test.

Learn about the life and work of Gottfried Leibniz, and find out how he remains one of the greatest and most influential metaphysicians, thinkers, and logicians in history.