SOLUTION: what does the function exists and doesnot exist mean

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Question 627224: what does the function exists and doesnot exist mean
Answer by solver91311(24713) About Me  (Show Source):
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A function exists for all values of the independent variable in the domain of the function. A function does not exist for all values of the independent variable excluded from the domain of the function.

For example: does not exist for but does exist for all other real number values of .

is defined, and therefore exists, and is not defined, and therefore does not exist .

On the other hand:

is defined, and therefore exists,

Note: is the set of all real numbers and is the set of complex numbers.

John

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