What is the domain of f(x)?
{x| –4 < x ≤ 4}
{x| –3 < x ≤ 4}
{x| 1 < x ≤ 4}
{x| 2 < x ≤ 4}

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(1) Answers

Jayda

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
-4x so
S={x| -4