On Thu, Jun 19, 2008 at 3:14 AM, Roberto Nobrega [EMAIL PROTECTED] wrote:
While checking SymPy wiki's tutorial about pattern matching, I ended up with
the following:
from sympy import *
x = Symbol('x')
p = Wild('p')
q = Wild('q')
(5*x**2 + 3*x).match(p*x**2 + q*x)
I got the following
Hi,
On Thu, Jun 19, 2008 at 12:26 PM, Riccardo Gori [EMAIL PROTECTED] wrote:
On Wednesday 18 June 2008 18:34:25 Ondrej Certik wrote:
On Wed, Jun 18, 2008 at 6:06 PM, Riccardo Gori [EMAIL PROTECTED] wrote:
Hello,
how about adding this function to the Matrix class? I find it very
useful.
I was just trying out sympy to try and make a few bits of hand-algebra
easier, and avoid mistakes, but am having some trouble.
I'm trying to factor out one variable, so tried (having set up a and b
as symbols):
factor(a*b+b, b)
And get:
Traceback (most recent call last):
File input, line 1,
On Thu, Jun 19, 2008 at 1:21 PM, tom [EMAIL PROTECTED] wrote:
I was just trying out sympy to try and make a few bits of hand-algebra
easier, and avoid mistakes, but am having some trouble.
I'm trying to factor out one variable, so tried (having set up a and b
as symbols):
factor(a*b+b, b)
On Thu, Jun 19, 2008 at 1:34 PM, Ondrej Certik [EMAIL PROTECTED] wrote:
On Thu, Jun 19, 2008 at 1:21 PM, tom [EMAIL PROTECTED] wrote:
I was just trying out sympy to try and make a few bits of hand-algebra
easier, and avoid mistakes, but am having some trouble.
I'm trying to factor out one
On Jun 19, 12:34 pm, Ondrej Certik [EMAIL PROTECTED] wrote:
however, generally the factor function is fragile, as you have
find out.
Ok, fair enough. Thanks - 'collect' does appear to do what I
want here. I know factorisation is a tricky problem in general,
I just wanted to get the hang of
On Jun 19, 1:20 pm, Ondrej Certik [EMAIL PROTECTED] wrote:
Right. I think you are doing it right. The other (maybe simple) option
is to use solve, here is my session where I tried that:
In [1]: vin, vout, r1, r2 = symbols([Vin, Vout, R1, R2])
In [2]: a = (vin-vout)/r1 + (0-vout)/r2
In
Hello,
I'm working at fixing issue 888. It is easy to fix but I don't understand why
in sympy/utilities/lambdify.py I found that lambdastr function does use
__str__ for expr.
def lambdastr(args, expr):
Returns a string that can be evaluated to a lambda function.
from sympy
Hi,
I see the problem was solved, however a few comments are needed.
I'm trying to factor out one variable, so tried
(having set up a and b as symbols):
collect() works, but the same can be achieved with factor(), e.g.:
In [4]: factor(a*b+b, (a, b))
Out[4]: b*(1 + a)
or else
In [7]:
I'm running latest hg version:
[EMAIL PROTECTED]:~/Projects/sympy$ hg tip
changeset: 2143:ccebd03423df
tag: tip
user:Riccardo Gori [EMAIL PROTECTED]
date:Wed Jun 18 17:47:53 2008 +0200
summary: Matrix-number multiplication speedup 700%
[EMAIL
Hi Brian, All,
On Wed, Jun 18, 2008 at 04:52:34PM -0600, Brian Jorgensen wrote:
For years, I've been hearing that effective text editing is essential to
productive coding, but I'd never really taken the time to move beyond
Notepad++, Text Mate, and gedit. I've recently started using vim, and
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