| [ QuizWit ] in KIDS 글 쓴 이(By): jaekun (Yossarian) 날 짜 (Date): 2004년 5월 13일 목요일 오후 02시 12분 20초 제 목(Title): Re: EXP QUIZ its moment generating function is e^{t^2/2}. hence the problem reduces to that of computing (d/dt)^n{e^{t^2/2}}|_{t=0}. so, it seems that the answer is 0 if n is odd and n!/(2^{n/2} {n/2}!) if n is even. (Sorry, I made a mistake in the previous posting.} in my humble opinion, this is a good problem for college sophomores. |