Perfect, thanks again!
On Apr 1, 9:24 pm, Robert Bradshaw <rober...@math.washington.edu>
wrote:
> On Apr 1, 2010, at 9:21 PM, scott.h wrote:
>
> > That did exactly what I wanted to do! Thank you very much for taking
> > the time to reply. The command C = [var("C_%s" % i) for i in
> > range(n)] in particular is what I was looking for. I think I can
> > glean how %s works from how you've used it and will experiment a
> > little. However if you, or anyone else, could point me in the
> > direction of some documentation for it that would be much
> > appreciated. It's sort of hard to google/search.
>
> How abouthttp://diveintopython.org/native_data_types/formatting_strings.html
>
>
>
> > On Apr 1, 7:50 pm, Minh Nguyen <nguyenmi...@gmail.com> wrote:
> >> Hi,
>
> >> On Fri, Apr 2, 2010 at 12:36 PM, scott.h <scott.he...@gmail.com>
> >> wrote:
>
> >> <SNIP>
>
> >>> It seems like this should be simple but for the life of me I can't
> >>> figure out how to do it.
>
> >> Here I'm taking a guess at what you really want to do. See the
> >> following Sage session:
>
> >> [mv...@sage ~]$ sage
> >> ----------------------------------------------------------------------
> >> | Sage Version 4.3.5, Release Date:
> >> 2010-03-28 |
> >> | Type notebook() for the GUI, and license() for
> >> information. |
> >> ----------------------------------------------------------------------
> >> sage: n = 3
> >> sage: M = random_matrix(ZZ, nrows=n); M
> >> [ 2 2 -2]
> >> [ 4 2 -7]
> >> [ 2 -1 1]
> >> sage: # create a list of unknown constants; these are actually
> >> symbolic variables
> >> sage: C = [var("C_%s" % i) for i in range(n)]; C
> >> [C_0, C_1, C_2]
> >> sage: X = [randint(1, 10) for i in range(n)]; X
> >> [2, 3, 2]
> >> sage: F = [C[i] * exp(M[i,i] * x) for i in range(n)]; F
> >> [C_0*e^(2*x), C_1*e^(2*x), C_2*e^x]
> >> sage: [F[i].substitute(x=X[i]) for i in range(n)]
> >> [C_0*e^4, C_1*e^6, C_2*e^2]
>
> >> --
> >> Regards
> >> Minh Van Nguyen
>
> > --
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