On 15 led, 00:35, Greg Marks <gtma...@gmail.com> wrote: > Dear Robert, > > I wrote a SAGE worksheet for my freshman calculus class > last semester implementing the Newton-Raphson algorithm > for finding roots of functions to arbitrary precision. > You'll find it unduly didactic, I'm afraid, but a few of > the cells toward the end might be the sort of thing you're > looking for. The worksheet can be found as a text file at: > > http://gmarks.co.cc/nr.txt > > Comments and critiques from all are certainly welcome. > > Sincerely, > Greg >

Many thanks Greg, I have a similar one: http://user.mendelu.cz/marik/sage/num.pdf But I do not know, how much can I trust the result. If I do (for example) sin(1).n(digits=100000000) is it true that the first 100000000 digits are correct? Or Sage actually passes the computation to scipy or some library which has limited precision a thus, only say first 10000 digits are correct. I have no education in computer science (I do pure mathematics only), so sorry if the question is silly :) Robert

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