Definite Integrals Khan Academy

Here we walk through how to use a graphing calculator compute the integral found in last video. Given a definite integral expression, we can write the corresponding limit of riemann sum with infinite rectangles. We learned that definite integrals give us the area under curve and above xaxis.

When using substitution in definite integrals, we must make sure take care of the boundaries integration. What can you say about the velocity and position of a particle given its acceleration. Sal finds the definite integral of (16x)/x between 1 and 2 using reverse power rule.

Practice this lesson yourself on khanacadem. To do that, he has use 1/x, which is ln(x). Thinking about how to evaluate the sum of definite integrals over adjacent intervals.