A popular theory that attempts to explain the ups and downs of everyday life states that
Chapter 4, Problem 179(choose chapter or problem)
A popular theory that attempts to explain the ups and downs of everyday life states that each of us has three cycles, called biorhythms, which begin at birth. These three cycles can be modeled by sine waves. Physical (23 days): Emotional (28 days): Intellectual (33 days): where is the number of days since birth. Consider a person who was born on July 20, 1986. (a) Use a graphing utility to graph the three models in the same viewing window for (b) Describe the persons biorhythms during the month of September 2006. (c) Calculate the persons three energy levels on September 22, 2006. 1
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