[LON-CAPA-users] Algebra Expression Rendering in LON-CAPA

[Harding, Gene L]

Hi,



I think the formatting may be different inside a function assignment. This is what I get when I use the following syntax:

$function = "$numer/$denom  [pi + \sum_{n=1}^{\infty}($sum_numer/($sum_denom_n_coeff n - $sum_denom_const))*sin($w nt)]";

[cid:image001.png at 01D26D8C.EA9DB9E0]

Did I mess up the syntax?





Gene L. Harding, PE

Associate Professor of ECET

574-520-4190

Purdue University-South Bend



-----Original Message-----
From: lon-capa-users-bounces at mail.lon-capa.org [mailto:lon-capa-users-bounces at mail.lon-capa.org] On Behalf Of Gerd Kortemeyer
Sent: Friday, January 13, 2017 10:39 AM
To: Discussion list for LON-CAPA users <lon-capa-users at mail.lon-capa.org>
Subject: Re: [LON-CAPA-users] Algebra Expression Rendering in LON-CAPA



Hi,



It’s \sum



as in



\sum_{n=1}^{\infty}



- Gerd.



> On Jan 13, 2017, at 10:29 AM, Harding, Gene L <glhardin at purdue.edu<mailto:glhardin at purdue.edu>> wrote:

>

> Hi,

>

> I am having trouble rendering an algebraic expression with a summation sign (capital Sigma). I want an expression that looks like this, using variables for the numeric portions of the expression:

> <image003.jpg>

> I am able to render the integration sign using this code:

> $function = "$numer/$denom  [pi + int($sum_numer/($sum_denom_n_coeff n

> - $sum_denom_const),1,3)*sin($w nt)]"; …providing an expression that looks like this:

> <image004.png>

>

> But when I try to render the summation sign using this code:

> $function = "$numer/$denom  [pi + sum($sum_numer/($sum_denom_n_coeff n

> - $sum_denom_const),n,1,3)*sin($w nt)]"; …I get the following:

> <image005.png>

>

> I have spent a couple of hours looking through the Maxima Manual and other references, as well as some examples I have found online, but have not been able to figure out the syntax for rendering the summation sign. Can anyone offer advice on how to do this?

>

> Also, although not so important, if someone can tell me how to replace the outer parentheses with square brackets, and/or how to display the numeric part of the sine argument with commas (e.g., 90,000 vs 90000), I would really appreciate it.

>

> Thanks,

>

> Gene L. Harding, PE

> Associate Professor of ECET

> 574-520-4190

> Purdue University-South Bend

>

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--

Gerd Kortemeyer, Ph.D.

Associate Professor of Physics

Director, LON-CAPA Project

Michigan State University

http://www.msu.edu/user/kortemey/









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