UPSKILL MATH PLUS

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A relation '\(f\)' is defined as \(f(x) = x^2 - 2\) where, \(x \in \{\)−2, −1 ,0, 3\(\}\).
 
(i) List the elements of '\(f\)'.
 
The elements of '\(f\)' are \(\{(\), \()\), \((\), \()\), \((\), \()\), \((\), \()\}\)
 
[Note: Enter the elements in ascending order of the preimages]
 
(ii) Is \(f\) a function?
 
\(f\) is