PM1979 --- LImit+Integration

Let me suggest a better ans here:

圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Nov08/Crazyint2.jpg

Almost correct, since the limit of (-1)^n does not exist as n trends to infinity, you need to cancel it before you use the limit, which is in limit n trends to infinity (x^n/n-....... + (-1)^n integate f(t) dt = 0
you need to cancel the -1^n here.