User Portlet User Portlet

Discussions
Note this is not a delay equation. This is just s stretching of the time variable, therefore going from Tau to t you have Iz'[tau] -> beta Iz'[t] So that's why the first equation has a factor of 1/beta on the right hand side in my solution. A...
Hi, Natchaya, For instance: Clear[t]; a = 0.00002963808691235760; q = 0.00000906440236518953; b = 0.5; ts = 120; system = {S'[t] == (-a*S[t]*Z[t])*(1 + q*Z[t]) + ((b)*Z[t]), Z'[t] == (a*S[t]*Z[t])*(1 +...