Re: Mathematica have an 'Assume' type syntax/command?
- To: mathgroup at smc.vnet.net
- Subject: [mg33072] Re: Mathematica have an 'Assume' type syntax/command?
- From: bghiggins at ucdavis.edu (Brian Higgins)
- Date: Fri, 1 Mar 2002 06:51:20 -0500 (EST)
- References: <a5htib$hsu$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Flip, Try this:
In[26]:=Simplify[Integrate[x^2*Sin[n*Pi*x/a]^2, {x, 0, a}],
{n > 0, n \[Element] Integers}]
Out[26]=1/12*a^3*(2 - 3/(n^2*Pi^2))
Cheers,
Brian
"Flip Flippy" <flip at safebunch.com> wrote in message news:<a5htib$hsu$1 at smc.vnet.net>...
> Hi All,
>
> I saw this on sci.math and was wondering how an 'assume' type function
> can be done in Mathematica.
>
> Does one exist, or is there a way to emulate one?
>
> Here was the problem.
>
> After running the following code in maple:
>
> assume(n>0,n,integer);
> int(x^2*(sin(n*Pi*x/a))^2,x=0..a);
>
> Any thoughts? Thank you, Flip