Question: ABSORPTION OF DRUGS A liquid carries a drug into an organ of volume V cm3 at the rate of a cm3 /sec and leaves at the same rate. The concentration of the drug in the entering liquid is c g/cm3 . Letting x(t) denote the concentration of the drug in the organ at any time t, we have x(t) = c(1 - e-at/V)
a. Show that x is an increasing function on (0, ∞).
b. Sketch the graph of x.