Solve Function Question

Solve Function Question - Don't understand index required in the example - Сообщения

#1 Опубликовано: 26.05.2025 04:01:47
RegRetired

RegRetired

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In the attached sm file, I am trying to find the roots, alpha, to a complex set of equations. To get the answer, I have to use the index 2 as noted. An image of the important part of the calculation is shown in this image.

Screenshot 2025-05-25 215318.png

Also, I cannot get any other root finding functions to work. I have added the maxima plugin, but that fails also. If there is a function not requiring the index that works, I would appreciate the help.

ALPHA LAMBDA WORKING.sm (99 КиБ) скачан 56 раз(а).

Thanks,
Reg
Reg CurryLoveland, CO
#2 Опубликовано: 26.05.2025 13:50:37
StvMath

StvMath

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The solve function finds two solutions for each combination of Rexp, RTexp etc., the first of which is always zero. Presumably you want the non-zero solution which is the second one found, hence the subscript 2.

You could also use the four-parameter version of solve; for example: solve(F(a),a,0.001,1) which will find solutions betwee 0.001 and 1.
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francesco rapuano 26.05.2025 15:38:13
#3 Опубликовано: 26.05.2025 17:38:32
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Thank you.👍
Reg CurryLoveland, CO
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