[math] 網站資料

複利葉:
http://blog.xuite.net/lapuda.chen/PaulBlog/221866406

對數:
http://highscope.ch.ntu.edu.tw/wordpress/?p=16681
http://lms.learnmode.net/upload/flip/book/50/50b756e673379691/aa3c2d5714f3.pdf

e:
http://otherchang.pixnet.net/blog/post/31904616#comment-33706979

spline:
http://bime-matlab.blogspot.tw/2006/11/1110-spline.html