Hi all, I am just starting to use Sympy and I have a couple of questions. My need for sympy arose out of working on a simple Newton's method python script which is intended to use Newton's method (a *numerical*) method on somewhat arbitrary - but well-behaved - input functions. Since Newton's method relies on the derivative of the function as well, I'd like to be able to symbolically take the derivative rather than have to use a numerical approximation. After all, these are well-behaved functions, primarily algebraic and transcendental ones. So, what I would like to be able to do is write some code in my script which prompts the user for the function that will Newton's method will be used on. I know on a basic level how to use python's built-in input () and raw_input() functions. Is there a similar function in sympy, or a way to use one of those to functions to do what I'm trying to do? I couldn't find anything documenting this, and I really don't see why it should be impossible to do. Basically, I just want to associate a function "identifier" (e.g. f(x)) with some function (e.g. tanh(x) + x), since it seems like trying to implement Newton's method here with an anonymous function will be a pain. Again, I'm working on doing this in a script, not just in an interpreter like ipython or isympy.
Thanks! Matt --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
