httpi1175photobucketcomalbumsr630erosaiiiP5jpg Please show y

http://i1175.photobucket.com/albums/r630/erosaiii/P5.jpg

Please show your work or process so I my learn, thank you.

Solution

=(1-x^2)/2 dy dx =x(1-x^2)/2 dx =(0.5-0.25)/2 =0.125