Suppose a student carrying a flu virus returns to an isolated college campus of 5000 students. Determine a differential equation
governing the number of students x(t) who have contracted the flu if the rate at which the disease spreads is proportional to the number of interactions between students with the flu and students who have not yet contracted it. (Use k > 0 for the constant of proportionality and x for x(t).)
So multiplying two rationals is the same as multiplying two such as fraction as when you multiplying two rational numbers produces another rational number.