... can be used as guide line for solving contour.
Will leave it as is, unless some question arise.
Smath solve(2) is most interesting, maybe for more applications.

Jean

Contour SOLVE [at(2) LIMITS].sm (29,92 KiB) scaricato 1054 volta(e).
Contour SOLVE [Electron Publish].sm (24,26 KiB) scaricato 1042 volta(e).
Contour SOLVE Tom MCD.sm (199,08 KiB) scaricato 1272 volta(e).
Contour SOLVE [user ColorMap].sm (310,53 KiB) scaricato 1134 volta(e).