Newton had a fun way to approximate general roots...

[Kernelpanic]

Kernelpanic, here's an interesting book NUMERICAL MATHEMATICS AND COMPUTING by Ward Cheney and David Kincaid

http://134.208.26.59/NM/%E9%9B%BB%E5%AD%.../BOOK6.pdf

Thanks! Yes, the first impression is good. But there is no book that can cover all areas, no matter what it is.