On 29/07/07, William Stein <[EMAIL PROTECTED]> wrote:
>
>
> Excellent. If it doesn't work right, be sure to let us know, since
> it's hardly been used by anybody yet, and is fairly new code.
Thanks, I'm hoping to spend some time with SAGE this
week.
>
> Do you mean something like this:
>
> sage: deltau = function('deltau')
> sage: f = integrate(deltau(x), x)
> sage: f
> integrate(deltau(x), x)
> sage: f
> integrate(deltau(x), x)
> sage: f._args
> (deltau(x), x)
> sage: f._args[0]
> deltau(x)
>
> Using f._args is hack-ish, i.e., you shouldn't have to do that.
> However, it will give you access to the inputs args of any
> formally evaluated function, even the integrate function.
That's what I was looking for. I'll take hackish, as long as it
works for my purposes.
>
> Please don't get too frustrated if things are slow again in SAGE.
> We haven't put much work into optimization for the calculus package,
> so there is substantial room for improvement.
>
I suspect that it shouldn't be too bad, but it relies upon a few tricks
which I have to figure out how to duplicate in SAGE first.
Thanks,
Tim Lahey.
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