Okay, so I wasn't sure whether to post this in the stats bit (since this is a CDF I'm trying to find from a given PDF), but I thought since I understand the statistics part of it I'd post it here, since it's the integration I can't seem to do.

I originally got

as an answer, but Maple (don't know if people know what that is - just a program that can integrate and do lots of weird stuff really) gave me a different, slightly more complicated answer. Is my answer right?

Actually maybe this should've been put in the stats bit, 'cause I do have a slight problem with the stats reading the question...