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Joined: 20/10/2016(UTC) Posts: 5  Location: Innsbruck
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hello again I want to solve a system of equations my system is linear with 4 equations and 4 variables. How can i do this the best way. I think that smath cant solve the equation system with the solve command. I read from the german handbook that you can use the maxima plugin to use the maxima solver, but the maxima plugin fails to install  . Also when i try to solve it using matrices it says units dont match , when i remove the units the answer seems wrong.  is there a way to solve my 4 equations using smath?
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  Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740   Was thanked: 318 time(s) in 268 post(s)
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Hello, Have you tried to use eval() like eval( A^-1*C )= Try first without units, then with units (all nonzero elements of the matrix A must have units of the same dimension - meaning that if you divide every two matrix elements the result would be dimensinless) Regards, Radovan Edited by user 30 October 2016 16:09:48(UTC)
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When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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Rank: Newbie
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Joined: 20/10/2016(UTC) Posts: 5 Location: Innsbruck
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thx , is there a way to solve equations without using matrices?
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Rank: Administration Groups: Registered, Advanced Member Joined: 23/06/2009(UTC) Posts: 1,740 Was thanked: 318 time(s) in 268 post(s)
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Originally Posted by: walten  thx , is there a way to solve equations without using matrices? Maybe like this: roots() - does not need additional plugins FindRoot() - NonlinearSolvers plugin  |
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!" |
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Joined: 04/07/2015(UTC) Posts: 6,866  Was thanked: 981 time(s) in 809 post(s)
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Rank: Guest
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Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)
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Nothing wrong solving [n x n] system via matrix. Be damned careful if you type entries rather than collecting from source. Visit "So much from so little". Just figure how important for Engineering works !!! Jean  Solve [x,y,z] Compactum.sm (102kb) downloaded 638 time(s).
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 2 users thanked Jean Giraud for this useful post.
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on 30/10/2016(UTC), on 30/10/2016(UTC)
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