Evaluate the steady-state concentration.
Under some conditions, the rate at which the concentration of a dissolved substance across a cell's membrane changes within the cell is proportional to the difference between it and the outside concentration that is dy/dt = k(A/V)(c-y/0
Where:
y = the concentration of the substance inside the cell, y(0) = y( subscribt 0)
k = permeability coefficient of the membrane - constant
A = surface area of the membrane - constant
V = volume of the cell - constant
c = concentration of the substance outside the cell - constant
(dy/dt) = the rate with which y changes over time
Find the steady-state concentration that is, lim (t approaches infinity) y(t)