## Calculus (3rd Edition)

Comparing with the standard equation of a logistic differential equation $$\frac{d y}{d t}=k y\left(1-\frac{y}{A}\right)$$ we see that (a) it is not a logistic differential equation. (b) it is a logistic differential equation with $k=2$ and $A=3$. (c) it is not a logistic differential equation. (d) it is a logistic differential equation with $k=2$ and $A=1/3$.