nwagner at mecha.uni-stuttgart.de
Wed Feb 23 08:10:31 CST 2005
Stephen Walton wrote:
> Nils Wagner wrote:
>> Hi all,
>> Is it somehow possible to improve the accuracy of derivative ?
> Higher order?
> from scipy import *
> def func(x):
> return exp(2*x)
> for i in arange(1,6):
> print i,' derivative of exp(2*x) at x=0',d,'exact',2**i
> print ' rel error %e' % (d/2**i - 1)
> Changing the order to 9 improves the accuracy of the 6th derivative
> from 1e-4 to 3e-7.
The problem is that I need very accurate results, since I want to use
them as an input of
cof in SUBROUTINE pade (see my previous E-mail Pade Approximants).
cof contains the leading terms of the power series expansion of a function.
> SciPy-user mailing list
> SciPy-user at scipy.net
More information about the SciPy-user