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Function Notation

10. Relations and Functions / Function Notation / 문제 3

문제 3

A graph near $x equals 1$ shows an open circle at $open paren 1 comma 2 close paren$ and a filled dot at $open paren 1 comma 3 close paren$ . What is $f of 1$ ?

A

$3$

B

Both $2$ and $3$

C

$2$

D

Neither $2$ nor $3$