Domain of a function is the type of parameters it takes as input. The domain of a sine function is angle in either degrees or radians. The function that represents the population growth of the bacteria that is tripling every minute is given by the mathematical expression,
[tex]x_{t} = x_{0} \times 3^{t}[/tex],
where, t is time in minutes, [tex]x_{0}[/tex] is the initial population size, and [tex]x_{t}[/tex] is the population at time, t.
The domain of this function will be time, t.
