Re: Integrate with unknow function
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- Subject: [mg130227] Re: Integrate with unknow function
- From: Murray Eisenberg <murray at math.umass.edu>
- Date: Sun, 24 Mar 2013 04:16:05 -0400 (EDT)
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Either I'm not understanding something here or you didn't explain the situation precisely. . .
Is f just a symbol, or is there already an actual definition in the form
f[d_] := (some expression in d) ?
In any case, when you integrate with respect to d, that's a "dummy variable", so you would never expect to get an answer with a d in it.
At the very best, you might hope that the difference reduces to Integrate[f[d], {d, 2, 3}], for a specific function f.
Incidentally, d is probably a very bad name for the variable of integration!
On Mar 23, 2013, at 3:25 AM, Shan <shan.pub at gmail.com> wrote:
> Hi,
>
> I have a very rookie question as follows:
>
> Integrate[f[d], {d, 0,3}] - Integrate[f[d], {d, 0,2}]
>
> How can I get the result as f[d]? Thanks very much for any help!
>
> shan
---
Murray Eisenberg murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower phone 413 549-1020 (H)
University of Massachusetts 413 545-2838 (W)
710 North Pleasant Street fax 413 545-1801
Amherst, MA 01003-9305
- References:
- Integrate with unknow function
- From: Shan <shan.pub@gmail.com>
- Integrate with unknow function