N0 initial population The population at time t 0. Population density population per unit land area. N future population The population at time t.
The mathematical expression of density or mass density is that it is equal to the mass divided by the volume and contains units of m3 in the mks unit system.
C When will the population reach 30000. R rate The rate of population change as a function of t a 1 increase is expressed as 001. If a random variable X has a density function f x then we define the mean value also known as the average value or the expectation of X as m xf xdx. N future population The population at time t.