Re: Symbolic Differentiation
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- Subject: Re: Symbolic Differentiation
- From: steve donovan <steve.j.donovan@...>
- Date: Fri, 8 May 2009 09:10:06 +0200
On Fri, May 8, 2009 at 12:01 AM, Geoff Leyland
<geoff_leyland@fastmail.fm> wrote:
> I've had a quick look at your code, but I can't work this one out: what's
> the result of differentiating 3*x^2 + 5*x^2? That is, does it gather terms
> that aren't exactly alike?
Yes, Houston, we do have a problem:
+ 3 * 2 * x + 5 * 2 * x (unfolded result)
- 6 * x + 10 * x (folded result)
Obviously it's missing an opportunity for simplification, but I don't
know how to express it generally yet.
And collaboration would be most cool.
steve d.