In mathematical analysis, the general concept of function, application or mapping refers to a rule that assigns to each element of a first set a single element of a second set.
Using this definition, several elements of the domain can result in the same element of the range of the function.
But, the same element of the domain, can not have different values of the range of the function.
Therefore, the following expression can not be true:
f (1) = 1
Answer:
the following could not be true:
a. f(1) = 1
