Calculate Area of y=x^2 from x=1 to x=3

[Firben]

Calculate the area Below y = x^2, above y=0, from x=1 to x=3

Here is my solution:

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view&current=DSC_0021.jpg

The answer should be 26/3

 

[Ray Vickson]

Calculate the area Below y = x^2, above y=0, from x=1 to x=3

Here is my solution:

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view&current=DSC_0021.jpg

The answer should be 3/26

No. The answer should be 26/3.

Why do you not just use integration?

RGV