Displaying Math Formulas

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Alexander Ferling

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Oct 12, 2018, 4:30:26 PM10/12/18
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I would like to generate mathematical expressions and afterwards display them in my app

The problem is: n√(x*3) is not looking good!

I can format it as html, but as far as i can see, things like mathml are
not supported by app inventor.

-> Is there a possibility to format mathematical expressions in a nice way?


Juan Antonio

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Oct 12, 2018, 4:40:43 PM10/12/18
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One possibility is to present the expression as an image.

SteveJG

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Oct 12, 2018, 4:44:51 PM10/12/18
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Here is a way to deal with subscripts and superscripts https://groups.google.com/forum/#!searchin/mitappinventortest/subscript%7Csort:date/mitappinventortest/UZ1olWEzLS0/2H6g70DmDQAJ  

Other than using images, you are out of luck.  App Inventor 2 does not have a math font.

Regards,
Steve

Abraham Getzler

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Oct 13, 2018, 10:55:16 PM10/13/18
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This article beats the topic to death ...

ABG

TimAI2

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Oct 14, 2018, 6:43:26 AM10/14/18
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Juan Antonio

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Oct 14, 2018, 9:04:29 AM10/14/18
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Another way is with JavaScript and JqMath library:

formula4.png

<link rel="stylesheet" href="file:///mnt/sdcard/AppInventor/assets/jqmath-0.4.3.css">
<script src="file:///mnt/sdcard/AppInventor/assets/jquery-1.4.3.min.js"></script>
<script src="file:///mnt/sdcard/AppInventor/assets/jqmath-etc-0.4.6.min.js" charset="utf-8"></script>

formula5.png

Build:

<link rel="stylesheet" href="file:///android_asset/jqmath-0.4.3.css">
<script src="file:///android_asset/jquery-1.4.3.min.js"></script>
<script src="file:///android_asset/jqmath-etc-0.4.6.min.js" charset="utf-8"></script> 
 

Regards,
Juan Antonio Villalpando
p167Di_javascript_formulas.aia

Alexander Ferling

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Oct 14, 2018, 9:27:28 AM10/14/18
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Thank you, Juan,

JqMath seems to fulfill my needs very well. I like, that it is lightweight!

Before, I was fighting with MathJax. There the problem is, that you have to use online resources.
If you want to build an offline-app, than you habe to implement a 33MB package, which is too much I think.

Even if the my problem is solved -> Are lightweight packages of MathJax available?


Juan Antonio

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Oct 14, 2018, 1:04:13 PM10/14/18
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From https://mathscribe.com/author/jqmath.html:


jqMath is free, using the same open source license as jQuery, the world’s most popular JavaScript library. 

We also gratefully adopt jQuery’s “write less, do more” philosophy.

To use jqMath on your site, download jqMath, and open the included COPY-ME.html file as UTF-8 in a text editor.


I only use jqmath-0.4.3.css, jquery-1.4.3.min.js and jqmath-etc-0.4.6.min.js

Abraham Getzler

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Oct 14, 2018, 5:17:12 PM10/14/18
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