The correct answers are D. 0 and E. 1
A function \(f\) from a set A to a set B is a relation that assigns to each
element \(x\) in the set A exactly one element in the set B. The set A is the
domain (also called set of inputs) of the function and the set B contains the range
(also called set of outputs). According to this statement the set of values that \(y\) take is the range, so as shown in the Figure above:
First.
\(y=1 \ when \ x=0\)
Second.
\(y=0 \ when \ x=-1 \ and \\ y=0 \ when \ x=1\)
