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when toggle format what by license comment
Dec 4, 2020 at 16:45 comment added Giorgio Metafune Yes it is! You need only a control for $S(t)1$.
Dec 4, 2020 at 16:38 comment added Ilovemath It really is very simple, I thought it would be complicated. Thank you for your help.
Dec 4, 2020 at 16:36 vote accept Ilovemath
Dec 4, 2020 at 15:04 history answered Giorgio Metafune CC BY-SA 4.0