hawaiidude

i was stumbled on a problem was i was looking over my book...i can do things like, differntial geometry, fourier analsysis, advanced calculus, calculus etc...but i can;t figure out this problem...i don't think i can figure it out...it's from the maclariun series...as most of you know, sinx=x-x^3/3!+x^5/5!-x^7/7!+..=sigma ^infinity, n=0 (-1)^nx^2n+1/ (2n+1)!...at sin(.4)...i don;t think this is integratable....i tried everything from integration to u-substituion but it won't work...