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Hello, I can't find the error. I want to solve a simple linear equation for a static problem. But with the solve() function i can't enter units.  it says not real roots. Thanks for help
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Originally Posted by: Thomy  I can't find the error. I want to solve a simple linear equation for a static problem. But with the solve() function I can't enter units. Generally, solve blocs aren't units compatible. Attach the document for possible doctoring.
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Hello
You can find the file in the attachment
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There is no "solve block" there. For the real ones there is a plugin. In any case, there is a function to find roots, which is compatible with the use of units, you just have to know how to use it and in what cases. For this function, the roots function seems more suitable instead of solve. Try with this, for example  Best regards. Alvaro
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Doesn't work. The File is in the attatchment.
Thanks you very much
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Rank: Advanced Member Groups: Registered
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Originally Posted by: Thomy Doesn't work. The File is in the attachment. ... Hi. I can't find the file. Best regards. Alvaro.
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Rank: Newbie
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Rank: Advanced Member Groups: Registered
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Originally Posted by: Thomy Hi. It works in my environment. Try with F9 for update the calculation.  Best regards. Alvaro.
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Originally Posted by: Thomy Doesn't work. The File is in the attatchment. NO file attached !!!
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In your initial post, just replace solve() by Solve(). This requires the Maxima Plugin being installed. It is a symbolic solver, which has generic unit handling, i.e. the unit of the result is determined by the solver. An alternative is the FindRoot function, where you have to provide an initial guess (starting point for the numeric solver) and the result is automatically assigned to the variable. The maxima solver returns an equation variable=solution, which can be converted into an assignment by the Assign() function. More details to be found in the handbook (Google SMath Handbuch). ![2023-01-27 23_20_25-SMath Solver - [Fixpunkte LIWA.sm_].png](/forum/resource.ashx?a=46052&b=2) |
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How can i install the MaximaPlugin. Do i have to integrate the maxima folder in the plugin subfolder from SMath?
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Rank: Advanced Member Groups: Registered
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Originally Posted by: Thomy How can i install the MaximaPlugin. Do i have to integrate the maxima folder in the plugin subfolder from SMath? Follow the link in my signature (points to the wiki). There you find instructions. |
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