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Offline ndtma  
#1 Posted : 07 June 2023 17:25:18(UTC)
ndtma


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Hello!
What is the advantage of at function in SMath ?
Appreciate if any useful example is provided.
Cheers !

Edited by user 07 June 2023 17:43:21(UTC)  | Reason: Not specified

Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka

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Offline Razonar  
#2 Posted : 07 June 2023 18:34:30(UTC)
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Hi Amarasekera, a pleasure to greet you. I'm sure others in this forum will be able to give very good examples, I would just like to add that the 'at' function is more or less similar to the 'eval' in maple, although it also has a 'subs' function, and even another one like 'algsubs', or Mathematica's f /. x -> a notation, and perhaps there you can see how those programs use it and get a better idea of what it might be useful for. I also remember that den derive, which did not have a function like at, could be used instead ... take the limit: lim f for x -> a

Best regards.
Alvaro.
Offline ndtma  
#3 Posted : 07 June 2023 20:01:37(UTC)
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Originally Posted by: Razonar Go to Quoted Post
Hi Amarasekera, a pleasure to greet you. I'm sure others in this forum will be able to give very good examples, I would just like to add that the 'at' function is more or less similar to the 'eval' in maple, although it also has a 'subs' function, and even another one like 'algsubs', or Mathematica's [b]f /. x -


Hi Alvaro, thank you very much for your kind sentiments and valuable clarifications.
Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
Offline mkraska  
#4 Posted : 07 June 2023 21:19:06(UTC)
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Handbook page for at() and Solve(). at() is a convenient alternative for Assign(), which creates assignments based on equations (as returned by Solve, ODE2 or Fit())

at.sm (23kb) downloaded 7 time(s).

at.PNG
_Solve.sm (34kb) downloaded 7 time(s).

2023-06-07 20_12_17-SMath Solver - [_Solve.sm_].png
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
Offline Jean Giraud  
#5 Posted : 07 June 2023 22:48:46(UTC)
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Some demo application.
Take care ... Jean.

Solve at(2), at(3).sm (31kb) downloaded 5 time(s).
Offline Jean Giraud  
#6 Posted : 08 June 2023 00:04:21(UTC)
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Electron function added Φ(x,y)
This function has no symbolic solution.
It plots X_Y but for QuickPlot, you need solving.
Cheers ... Jean.

Solve at(2), at(3).sm (48kb) downloaded 5 time(s).
Offline ndtma  
#7 Posted : 08 June 2023 05:33:01(UTC)
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Hi,
Thank you all for the clarifications and examples Clap
Look within!... The secret is inside you.
Best Regards
Eng. NDTM Amarasekera - Sri Lanka
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