I'm having a little trouble figuring out how to calculate the derivative of a logistic function.
I'm starting to feel like this 'introduction to calculus' is a little bit above me, but oh well.
I originally just used the quotient rule,
with
Using those figures there, I ended up with
when solving for t=4.
Where am I going wrong?
Damn, another simple mistake. Math would have to be the most frustrating yet satisfying subjects. A little error can throw you out so much and unless it's picked up, it doesn't matter how the problem is set up, or what formulas you use, you won't get the correct answer..
Plugging in t=4 gets me 280, which is what i was after.
Thank you!!!