Can somebody pls tell the PM: "The exponential function f( x) = exp(x) has the ***special property*** that its derivative is the function itself, f′( x) = f( x)." It's on Wikipedia (and all elementary maths textbooks). "Led by the science" - sigh.https://twitter.com/R_Trotta/status/1239599254924075008 …
but just because its derivative is also exponential doesn't mean that its derivative is constant.. i.e. near t=0 the derivative is approximately 0 depending on τ in e^(t/τ), but not until around t=τ you start to see rapid changes
-
-
i have no political dog in this fight, but the growth isn't the same at all times (i.e. not constant) and i don't see anything erroneous in the phrasing
-
Yeah I was thinking exactly the same thing.
- 2 more replies
New conversation -
-
-
Indeed. My point was that the derivative also keeps growing, so so long as the curve stays exponential, the growth doesn't slow down, i.e. "the phase" is ALL the time after t=tau.
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
There's also the additional fact that viruses follow a logistic curve and not a pure exponential, and logistic curves *absolutely* have a fast part and a slow part.
-
Fair point!
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.