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Changes for page ONYX und MAXIMA

Last modified by Carina Enke on 12.12.2025
From version 6.1
edited by Carina Enke
on 15.11.2025
Change comment: There is no comment for this version
To version 6.2
edited by Carina Enke
on 12.12.2025
Change comment: There is no comment for this version

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1 1  To perform more complex calculations and to fulfill specific requirements, the computer algebra system MAXIMA, which is linked to ONYX, can be used. The [[Netzwerk Mathematik>>url:https://bildungsportal.sachsen.de/opal/auth/RepositoryEntry/5499682817/CourseNode/88308307976325||shape="rect"]] has gathered a number of [[Good-Practice-Examples>>url:https://bildungsportal.sachsen.de/opal/auth/RepositoryEntry/5499682817/CourseNode/93229879750473/||shape="rect"]]. This collection of typical applications, tricks and pitfalls will help you understand how to use the MAXIMA connection in ONYX. Please find below a selection of topics that are described in detail.
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15 15  * [[Good-Practice-Examples Maxima/ONYX in Netzwerk Mathematik>>url:https://bildungsportal.sachsen.de/opal/auth/RepositoryEntry/5499682817/CourseNode/93229879750473/wiki/Index||shape="rect"]]
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33 33  
34 34  == Analysing user responses with the help of variables ==
35 -
36 36  By using maxima queries in the Variables tab, you can access the answer selected by the user and the correct task solution. More details can be found here [[Expert assessment>>doc:ONYX.Erstellung von Testinhalten.Aufgaben.Bewertung festlegen.Expertenbewertung.WebHome]].
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39 -== Auto-completion of invalid MAXIMA terms ==
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31 +== Auto-completion of invalid MAXIMA terms ==
41 41  If during the creation or editing process of a variable the user enters a non-valid MAXIMA expression in the field for determining the value, ONYX converts the expression into a valid expression before transferring it to MAXIMA.
42 42  
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43 43  === Value of a numerical variable ===
44 44  
45 45  When determining a numerical (variable) value, the "invalid" calculation defined by the author is completed with a** float command**: float(...);.
46 46  
47 47  Example
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49 49  * The calculation "1+2" is changed to the MAXIMA command "float(1+2);".
50 50  * The data type of the variable is taken into account for the result regardless of the MAXIMA calculation performed.
51 51  * If the value of a variable type "Integer" is set by the calculation "1+2", the result value of the MAXIMA calculation is "3.0", the variable value is set accordingly to "3" as an integer value.
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75 75  When determining a text-based (variable) value, the "invalid" calculation defined by the author is completed with a semicolon.
76 76  
77 77  Example
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79 79  * The entry "a" is changed to the MAXIMA command "a;".
80 80  * The data type of the variable is taken into account for the result regardless of the MAXIMA calculation performed.
81 81  * If the value of the variable is set to the type "Text", the result value of the MAXIMA calculation is "a" and the variable value is accordingly set to "a".