On Fri, Apr 17, 2009 at 07:32:42PM -0700, Luke wrote:
>
> I am working with some sympy Functions that are dependent upon a sympy
> Symbol 't'. For example:
> t = Symbol('t')
> q1 = Function('q1')(t)
>
> When q1 is printed I get:
> q1(t)
> Similarly, when q1.diff(t) is printed I get:
> D(q1(t), t)
>
> I would instead like the following behavior:
> In: print q1
> Out: q1
> In: print q1.diff(t)
> Out: q1'
This it not possible with the current sympy as far as I know.
> Basically, the Functions that I am working with are generalized
> coordinates, and their time dependence is implied so having the (t)
> just makes all the expressions really long and hard to look at.
> Similarly for q1.diff(t).
May be you can do your calculations with two different symbols:
q1, q1_dot (or Dq1)
You could tell us more about your problem in hope we can find a
practical solution.
By,
Friedrich
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