World
Population:
A mathematical model
for world population growth over short periods of time is given
by:
P = Pهe^rt
Where P is
the population after t years, Pه
is the
population at t=0, and the population is assumed to grow
continuously at the annual rate r. How many years, to the
nearest year, will it take the world population to double if it
grows continuously at an annual rate of 2%.