Basel problem

http://en.wikipedia.org/wiki/Angular_displacement 중 일부 In three dimensions, angular displacement has a direction and a magnitude. The direction specifies the axis of...

http://www.dspguide.com/   The Scientist and Engineer’s Guide to Digital Signal Processing이란 책의 html판인듯 JPEG가 DCT(Discrete Cosine Transform)을 이용했다는 건 알겠는데...