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Hello, I wonder why left matrix give error and right is ok? Best. Test1.sm (55kb) downloaded 28 time(s).
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Originally Posted by: Everontt I wonder why left matrix give error and right is ok? They are identical, but the left one is incompletely dressed. I don't understand the project. There is nothing more confusing than subscripts. They are useful if the subscript is a long explicative definition. Test1(1).sm (60kb) downloaded 17 time(s).
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I think some definitions are missing Best regards Carlos
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Originally Posted by: CBG I think some definitions are missing
No, it's the operator formatting of the built-in minor() function. Can be found on the Matrix palette. |
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Ufss!!! Sorry !!!
You are right.
How I did not see it defined in the floating panel?
Thank you
Carlos
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Originally Posted by: CBG I think some definitions are missing I think it is => this from the palette
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Originally Posted by: Jean Giraud I think it is = Some kind of matrix logic ... logic & ½ Not familiar at all, no recollection from Mathcad. Is it really productive fro the collab originator ? Jean Utilities Matrix UNKNOWN Palette.sm (20kb) downloaded 16 time(s).
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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,639 Location: Italy Was thanked: 1323 time(s) in 873 post(s)
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Seems some issue in the symbolic engine about the inversion of minor() when there are units Originally Posted by: Everontt I wonder why left matrix give error and right is ok? Because the right one comes from an if/else, that force a numerical optimization context while in the left case it's in a symbolic context. To figure out the difference between K.1 and K.2, look at their content - add a breakpoint on Mxx and look what it happens inside the loop in the 2 cases
- alternatively write on the canvas K.1= and K.2= with "none" optimization
Edited by user 09 March 2018 12:08:11(UTC)
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Originally Posted by: Davide Carpi Because the right one comes from an if/else, that force a numerical optimization context while in the left case it's in a symbolic contex About all that: my understanding is only slightly pregnant ! It resumes to solving a tridiagonal system c/w units conclusively resulting in valued units and coefficients. Most interesting for more bed time reading. Thanks to all ... Jean Maths Tridiagonal [Unknown Units].sm (142kb) downloaded 16 time(s).
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