P1. Find equilibrium pts. of model:

[da/dt] = [1a + 3b + 5]

[db/dt] [2a + 4b + 6]

P2. Find equilibrium pts. of model:

[da/dt] = [a - b]

[db/dt] [2a - b - (a^2)]

P3. Find equilibrium of this z(t) @ time t:

dz/dt = A - cB(((2D)/(BE))^(3/4))(z^(3/4)) (c is a constant)

P4. Linearize this model/equation and use least-squares fit (w/ given points) to estimate constants:

dz/dt = az - ab(z^2)

t : 0 1 2 3 4 5

z : 1.0 1.2 1.4 1.6 1.8 2.0

Good luck and tenx!