Solve for Unknowns - 9 Equations, 9 Unknowns Options  Email this topic  Watch this topic  Print this topic » Normal Threaded

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- Norm -		#1 Posted : 16 January 2018 22:57:54(UTC)
Rank: Advanced Member Groups: Registered Joined: 29/11/2017(UTC) Posts: 82 Location: Midwest Was thanked: 9 time(s) in 7 post(s)		Transferring a MC sheet. How can I solve for the unknowns? BJT Circuit Analysis.sm (55kb) downloaded 29 time(s).
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alyles		#2 Posted : 16 January 2018 23:48:31(UTC)
Rank: Advanced Member Groups: Registered Joined: 23/03/2016(UTC) Posts: 276 Was thanked: 91 time(s) in 57 post(s)		For using Linsolve(1) function, you need to put the system of equations into a matrix. The result computes the unknowns in alphabetical order, I believe. You can retrieve this information using Unknowns function. BJT Circuit Analysis.sm (64kb) downloaded 43 time(s).
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- Norm -		#3 Posted : 17 January 2018 00:45:55(UTC)
Rank: Advanced Member Groups: Registered Joined: 29/11/2017(UTC) Posts: 82 Location: Midwest Was thanked: 9 time(s) in 7 post(s)		Many thanks!
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Jean Giraud		#4 Posted : 17 January 2018 04:15:48(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		Originally Posted by: alyles You can retrieve this information using Unknowns function. Unknowns("variable" - ... from f(x) menu Returns a vector of unassigned variables contained in "1:variable". If unknowns are not found, returns 0. Solutions are returned in lexicographic order ... inspect Unknowns(A)
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Jean Giraud		#5 Posted : 17 January 2018 05:41:57(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		... thanks for this LinSolve application. Maths LinSolve.sm (70kb) downloaded 61 time(s).
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Jean Giraud		#6 Posted : 17 January 2018 10:03:40(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		Originally Posted by: nasch Transferring a MC sheet. How can I solve for the unknowns? Here is another MCD sheet, converted Smath [circuit application]. Iterative solvers are common in Engineering. Solve TREASURY_1 [Iterate L, Lc].sm (59kb) downloaded 40 time(s).
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- Norm -		#7 Posted : 17 January 2018 16:33:57(UTC)
Rank: Advanced Member Groups: Registered Joined: 29/11/2017(UTC) Posts: 82 Location: Midwest Was thanked: 9 time(s) in 7 post(s)		Thanks Jean, for the Solve Treasury worksheet. I updated my sheet splitting the ampere and voltage values apart. Best regards, Norm BJT Circuit Analysis.sm (50kb) downloaded 18 time(s).
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alyles		#8 Posted : 17 January 2018 17:07:30(UTC)
Rank: Advanced Member Groups: Registered Joined: 23/03/2016(UTC) Posts: 276 Was thanked: 91 time(s) in 57 post(s)		I've modified the LinSolve(1) function and created a LinSolve2(2) function that allows user to specify result order vector. I've named it LinSolve2 to avoid confusion with the LinSolve(2) Maxima Plugin function. Not sure if this is useful for anyone. BJT Circuit Analysis (1).sm (87kb) downloaded 39 time(s).
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Jean Giraud		#9 Posted : 18 January 2018 07:23:34(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		Originally Posted by: alyles I've modified the LinSolve(1) function and created a LinSolve2(2) function that allows user to specify result order vector. I've named it LinSolve2 to avoid confusion with the LinSolve(2) Maxima Plugin function. Not sure if this is useful for anyone . Lovely separation of result. A useful companion attached, more examples in future. Solve LinSolve COMPANION.sm (32kb) downloaded 42 time(s).
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alyles		#10 Posted : 18 January 2018 15:35:41(UTC)
Rank: Advanced Member Groups: Registered Joined: 23/03/2016(UTC) Posts: 276 Was thanked: 91 time(s) in 57 post(s)		Quote: ... thanks for this LinSolve application. Jean, I believe the original LinSolve function is a snippet created by Martin (mkraska). You can find it within the Snippet Manager in SMath.
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Jean Giraud		#11 Posted : 19 January 2018 18:07:33(UTC)
Rank: Guest Groups: Registered Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)		Originally Posted by: alyles Jean, I believe the original LinSolve function is a snippet created by Martin (mkraska) I think so ... those gyzmas # are Martin style. Easy to removed all # ... like this 1. start by the LHS in the program definition 2. put the cursor on the right of the # 3. press F8 to see all selected, in the program core as well 4. once selected, press Backspace ... gone 5. next proceed in the core of the program 6. result => nice and clean Cheers
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