Which of the following is related to logistic growth curve of a population?
1
\(\rm \frac{dN}{dt}=rN\left(\frac{K-N}{K}\right)\,\)
2
\(\rm \frac{dt}{dN}=rN\left(\frac{K-1}{N}\right)\,\)
3
\(\rm \frac{dt}{dN}=rn\left(\frac{K-1}{K}\right)\,\)
4
\(\rm \frac{dN}{dt}=rN\left(\frac{N-K}{N}\right)\,\)