1. The problem statement, all variables and given/known data I need to solve two differential equations to find a population function P(t). I am able to do this with problems like newtons law of cooling: dT/dt=-k(T-Ta) solves to: dT=-k(T-Ta) dt ∫1/(T-Ta)dT=∫-k dt Ln(T-Ta)=-kt e-kt=T-Ta T=Ta+E-kt However I have been presented with two hard problems which I can not do: 1. dP/dt=kP-AP2 2. dP/dt=kP(M-P) using P=Po at t=0 find P(t) for both. 2. Relevant equations ^As above, no other equations where provided, it is pretty much calculus and algebra 3. The attempt at a solution dP=kP-AP2 dt dP=P(k-AP) dt 1/P dP = k-AP dt ∫1/P dP = ∫k-AP dt Ln(P)=t(k-AP) Ln(P)=tk-APt etk-APT=P loge(tk-APt)=P eP=tk-APt From there it just loops around. I can not think of anything else to do with it. As you can not (that I am aware of, unless you used unreals, factorise kP-AP2. Thanks for reading this, I am not giving up and will continue to work on it now.