
periodic cycles
Can someone please explain this question,
Explain why the period of a cycle is not uniquely defined, and suggest a quantity that more precisely defines what we would naturally think of as the period of a cycle. ?
I am not sure about the answer, but is the period of a mathematical model not uniquely defined because it can change over time?
Any help appreciated.

Re: periodic cycles
You need to explain your doubt a little bit more. The periodic functions have a well defined period. If a function f(x) = f(x+P) for all x then P is said to be the period of the unction f and is said to be a periodic function. And further the least value of P is called the Prime period.