solving differencial equations
These homework problems that I need help on are due tommorrow, eastern standard time. I am stuck could someone please help? Here they are:
1) Solve the initial value problem: dx/dt = 1- x^(2), x(0)= 3
2) The world population in 1990 was 5,274.320M and in 2000 was 6,073.265M. Predict the world population in 2007 and 2050 by using the Unbounded Population Model. Is your answer greater, lesser, or equal to
the current world population posted on
U.S. and World Population Clocks - POPClocks (Solve w/o Maple)
http://www.mathhelpforum.com/math-he...c3fd4448-1.gif (Unbounded population model)
3) the world population in 1980 was 4,447.068M, in 1990 was 5,274.320M
and in 2000 was 6,073.265M. Predict the world population in 2007 and
2050 by using the Bounded Population Model. Also, what is the limiting
population (carrying capacity) of the world? (Solve w/o Maple).
http://www.mathhelpforum.com/math-he...72ba832d-1.gif (logistic growth model)
where http://www.mathhelpforum.com/math-he...3c97c188-1.gif is the carrying capacity.