Question

I'm confused as to how the examples are done: http://tutorial.math.lamar.edu/Classes/CalcI/AreaBetweenCurves_files/eq0022MP.gif

Answer 1

whats the tension? what part?

Answer 2

How did it get from xe^-x^2 to 1/2 e^-x^2?

Answer 3

okay, thats a seprate integral....they have used integration by parts!

Answer 4

its an intergral inside a bigger integral.

Answer 5

Okay. So's supposed to be something like this right?