Engineering Board Exam Reviewer · Applications: Growth and Decay · hard

A population obeys the logistic equation dP/dt=0.1P≤ft(1-P/1000 ) with P(0)=100. Find P(10).

  1. 213.7
  2. 271.8
  3. 999.6
  4. 232

Answer

D. 232

Solution

The solution of P'=kP(1-P/K) is P= K1+Ae-kt with A=K-P0/P0=9. So P= 10001+9e-0.1t and P(10)= 10001+9e-1 231.9.

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