Question

Interval notations…when using infinity or negative infinity, do you use brackets or parentheses?

Answer 1

Answer:

The correct way to represent infinity or negative infinity is in parentheses;

$\begin{gathered} -\inftyExplanation:

When using infinity or negative infinity;

[tex]\infty\text{ or }-\infty$

Interval notation, we use parentheses;

$(-\infty,\infty)$

because infinity or negative infinity is not a Normal/real number and not be equaled.

Therefore, the correct way to represent them is in parentheses;

[tex]\begin{gathered} -\infty