1. The problem statement, all variables and given/known data Viruses are reproducing with rate of k ,in t minutes, the function is: f(x) = Po x e^(kt) However there is an elimination rate of a viruses per minute. 2. Relevant equations 3. The attempt at a solution We can't say that the new function will be: f(x) = Po x e^(kt) - ax because the initial number pf viruses are different for every trial. I used succeeding cells with formulae in Excel to generate these values, and it worked. But is there a way to generalize this situation into a formula?