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

Harding, Gene L glhardin at purdue.edu
Fri Jan 13 11:05:15 EST 2017

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

>

> _______________________________________________

> LON-CAPA-users mailing list

> LON-CAPA-users at mail.lon-capa.org<mailto:LON-CAPA-users at mail.lon-capa.org>

> http://mail.lon-capa.org/mailman/listinfo/lon-capa-users

--

Gerd Kortemeyer, Ph.D.

Associate Professor of Physics

Director, LON-CAPA Project

Michigan State University

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

_______________________________________________

LON-CAPA-users mailing list

LON-CAPA-users at mail.lon-capa.org<mailto:LON-CAPA-users at mail.lon-capa.org>

http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.lon-capa.org/pipermail/lon-capa-users/attachments/20170113/84ca8747/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 5985 bytes
Desc: image001.png
URL: <http://mail.lon-capa.org/pipermail/lon-capa-users/attachments/20170113/84ca8747/attachment-0001.png>