What is the domain of f(x)? {x| –4 < x ≤ 4} {x| –3 < x ≤ 4} {x| 1 < x ≤ 4} {x| 2 < x ≤ 4}
(1) Answers
the unfilled/open dot shows that we don't include that number
the filled/closed dot shows taht we include the number
so we see that it is open at -4 and closed at 4 so it is
-4
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