Overdose

Synopsis: A young woman, Marcela, is in his room watching TV when he hears a news report: the most famous singer of the moment is in a hospital in Los Angeles, due to excessive use of cigarettes. The sister Marcela, who is a doctor (and should understand mathematics) calls her and explains to him at the time as nicotine is eliminated from the blood stream of a person. She knows the function that models the amount of nicotine in the blood of a smoker, which is an exponential function by parts, by smoking too many cigarettes continuously.
Source: Unicamp - M3, Mathematics Multimedia.
URL: http://m3.ime.unicamp.br/recursos/1147