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

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.

Wrote

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.

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 (22,23 KiB) scaricato 1376 volta(e).


_Solve.sm (33,17 KiB) scaricato 1399 volta(e).

Some demo application.
Take care ... Jean.

Solve at(2), at(3).sm (30,21 KiB) scaricato 1369 volta(e).

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 (47,5 KiB) scaricato 1411 volta(e).

Hi,
Thank you all for the clarifications and examples