On Apr 15, 10:06 pm, "Ondrej Certik" <[EMAIL PROTECTED]> wrote:
> On Wed, Apr 16, 2008 at 2:01 AM, <[EMAIL PROTECTED]> wrote:
>
>
> I think secant should work with sympy functions too, not only python
> lambdas. Even if it's slow. If anyone (you?) would like to implement
> that, it'd be awesome.
On Apr 15, 11:56 am, Gael Varoquaux <[EMAIL PROTECTED]>
wrote:
> On Tue, Apr 15, 2008 at 11:44:16AM -0700, [EMAIL PROTECTED] wrote:
> > For the function of two variables, the natural assumption is that
> > f(0,1) means x=0 and y=1 because that's alphabetical order - that's
> > how nearly everyone
For the function of two variables, the natural assumption is that
f(0,1) means x=0 and y=1 because that's alphabetical order - that's
how nearly everyone does it in the symbolic math world (just think
back to algebra and calculus courses - it's ALWAYS written in that
order, except for the occasion
I understand that there are other ways of doing this that may be
numerically more efficient, but it seems to me that the expectation
that you should be able to call a function of one variable in this
fashion (or even a function of two variables as e.g. g=x*y+x/y ;
g(4,2) ) seems like a reasonable
I'm trying to do a fairly simple task as an exercise in trying to
understand how sympy works: find the root of a transcendental
equation... This is probably some conceptual trip-up that I'm missing,
but here it is, starting from the top:
>>> from sympy import *
>>> f= Function("f")
>>> x=symbols(
