Differential equation problem i

[afcwestwarrior]

Homework Statement

A population is modeled by the differential equation

dP/dt= 1.2P(1-P/4200)

(a) For what values of P is the population increasing?
(b) For what values of P is the population decreasing?
(c) What are the equillibrium solutions?

Do I just plug in numbers or do I find the derivative and then plug in numbers.

 

[afcwestwarrior]

Never mind I figured out the problem.