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| New data analysis from [@Jeffrey Townsend][at0] has been added: Optimal annual COVID-19 vaccine boosting dates following previous boosters or breakthrough infection https://community.wolfram.com/groups/-/m/t/3341399 [at0]:... |
| Hi Kelly, You can contact me by email: wu_fei_1978@163.com, or we can disuss your issue in Wolfram Community. |
| Another way, highlighting the bifurcation: ParametricPlot3D[ Evaluate@{r /. First@Solve[r x (1 - x/k) - x^2/(1 + x^2) == 0, r], k, x}, {k, 0, 10}, {x, 0 + 2 $MachineEpsilon, k - 20 $MachineEpsilon}, PlotPoints ->... |
| Je ne sais pas. Please ask to Stephen Wolfram, why UpSet? |
| Right now I don't think the problem can be solved. Deaths are easy to count and because they were ill first most all were tested, but the number of infected people is determined by testing, which has varied widely by location and indication. Until... |