SOLUTION: Does a function with the domain (-∞, ∞) exist in a real situation? Justify your answer with suitable example(s). Please help me with this question. Thank you!!!

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Question 977526: Does a function with the domain (-∞, ∞) exist in a real situation? Justify your answer with suitable example(s).
Please help me with this question. Thank you!!!
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


As an example, the domain of any polynomial function is the set of all real numbers. But I'm not sure what you mean by "a real situation". Yes, there are practical and certainly finite limitations that the real world would impose on any function that described a physical or tangible phenomenon. Hence, there are numbers in the interval that would certainly be nonsensical as inputs to any function descriptive of the real world.

John

My calculator said it, I believe it, that settles it