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第47行: |
| | <math> | | <math> |
| | \begin{aligned} | | \begin{aligned} |
| − | P(t) = \frac{K}{1+(\frac{K-P_0}{P_0})e^{-rt}}
| + | N(t) = \frac{K}{1+(\frac{K-N_0}{N_0})e^{-rt}} |
| | \end{aligned} | | \end{aligned} |
| | </math> | | </math> |
| | |{{EquationRef|2}}}} | | |{{EquationRef|2}}}} |
| | | | |
| − | * 初期(P≪K):增长缓慢。 | + | * 初期(N≪K):增长缓慢。 |
| | | | |
| | ==方程的性质== | | ==方程的性质== |