Calculus 2: Integration (8 of 9) Find the Exact Area Under the Curve 3

In this video I find the exact area under f(x)=x^2+2 by using integration.

Next video in the series can be seen at:

[teslamad]

Fantastic video. Calculus is so wonderful :)

[MrVoayer]

Yet another well done video explaining the concept of integration.

[deepayanmandal]

Gracias Sir for your otherworldly explanation, very useful for beginners, for concept-building.

[armanmanukyan]

Have you a lecture about "root mean square":the meaning of it, why we need them and e.t. If so, please help me to find them.

[brandoncunningham]

My teacher taught me another way of doing this, it is much longer and more complicated. Which way is the right way? and which will be acceptable on the AP test?

[dinamustafa]

if the same curve lies in the second quadrant where x is negative and why is positive, why the area is positive even though dx is negative ??

[AL-knyx]

With this method do we assume that x is in the middle of dx or is that irrelevant?